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 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         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         Font *fnt = getFont( font.family.c_str(), font.pointSize);
 196         if (!fnt)
 197                 return 0;
 198         singleLock s(ftlock);
 199         FT_Face current_face;
 200         if (FTC_Manager_Lookup_Size(cacheManager, &fnt->font.font, &current_face, &fnt->size)<0)
 201         {
 202                 eDebug("FTC_Manager_Lookup_Size failed!");
 203                 return 0;
 204         }
 205         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 206         float height=(current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap/2.0)/64;
 207         delete fnt;
 208         return height;
 209 }
 210
 211
 212 fontRenderClass::~fontRenderClass()
 213 {
 214         singleLock s(ftlock);
 215 //      auskommentiert weil freetype und enigma die kritische masse des suckens ueberschreiten.
 216 //      FTC_Manager_Done(cacheManager);
 217 //      FT_Done_FreeType(library);
 218 }
 219
 220 Font *fontRenderClass::getFont(const eString &face, int size, int tabwidth)
 221 {
 222         FTC_FaceID id=getFaceID(face);
 223         if (!id)
 224                 return 0;
 225         return new Font(this, id, size * ((fontListEntry*)id)->scale / 100, tabwidth);
 226 }
 227
 228 Font::Font(fontRenderClass *render, FTC_FaceID faceid, int isize, int tw): tabwidth(tw)
 229 {
 230         renderer=render;
 231         font.font.face_id=faceid;
 232         font.font.pix_width     = isize;
 233         font.font.pix_height = isize;
 234         font.image_type = ftc_image_grays;
 235         height=isize;
 236         if (tabwidth==-1)
 237                 tabwidth=8*isize;
 238         ref=0;
 239 //      font.image_type |= ftc_image_flag_autohinted;
 240 }
 241
 242 FT_Error Font::getGlyphBitmap(FT_ULong glyph_index, FTC_SBit *sbit)
 243 {
 244         return renderer->getGlyphBitmap(&font, glyph_index, sbit);
 245 }
 246
 247 Font::~Font()
 248 {
 249 }
 250
 251 void Font::lock()
 252 {
 253         ref++;
 254 }
 255
 256 void Font::unlock()
 257 {
 258         ref--;
 259         if (!ref)
 260                 delete this;
 261 }
 262
 263 int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt glyphIndex, int flags, int rflags)
 264 {
 265         FTC_SBit glyph;
 266         if (current_font->getGlyphBitmap(glyphIndex, &glyph))
 267                 return 1;
 268
 269         int nx=cursor.x();
 270
 271         nx+=glyph->xadvance;
 272
 273         if (
 274                         (rflags&RS_WRAP) &&
 275                         (nx >= area.right())
 276                 )
 277         {
 278                 int cnt = 0;
 279                 glyphString::iterator i(glyphs.end());
 280                 --i;
 281                 while (i != glyphs.begin())
 282                 {
 283                         if (i->flags&(GS_ISSPACE|GS_ISFIRST))
 284                                 break;
 285                         cnt++;
 286                         --i;
 287                 }
 288                 if (i != glyphs.begin() && ((i->flags&(GS_ISSPACE|GS_ISFIRST))==GS_ISSPACE) && (++i != glyphs.end()))           // skip space
 289                 {
 290                         int linelength=cursor.x()-i->x;
 291                         i->flags|=GS_ISFIRST;
 292                         ePoint offset=ePoint(i->x, i->y);
 293                         newLine(rflags);
 294                         offset-=cursor;
 295                         while (i != glyphs.end())               // rearrange them into the next line
 296                         {
 297                                 i->x-=offset.x();
 298                                 i->y-=offset.y();
 299                                 i->bbox.moveBy(-offset.x(), -offset.y());
 300                                 ++i;
 301                         }
 302                         cursor+=ePoint(linelength, 0);  // put the cursor after that line
 303                 } else
 304                 {
 305             if (cnt)
 306                         {
 307                                 newLine(rflags);
 308                                 flags|=GS_ISFIRST;
 309                         }
 310                 }
 311         }
 312
 313         int xadvance=glyph->xadvance, kern=0;
 314
 315         if (previous && use_kerning)
 316         {
 317                 FT_Vector delta;
 318                 FT_Get_Kerning(current_face, previous, glyphIndex, ft_kerning_default, &delta);
 319                 kern=delta.x>>6;
 320         }
 321
 322         pGlyph ng;
 323
 324         ng.bbox.setLeft( (flags&GS_ISFIRST|glyphs.empty()?cursor.x():cursor.x()-1) + glyph->left );
 325         ng.bbox.setTop( cursor.y() - glyph->top );
 326         ng.bbox.setWidth( glyph->width );
 327         ng.bbox.setHeight( glyph->height );
 328
 329         xadvance+=kern;
 330
 331         ng.x=cursor.x()+kern;
 332
 333         ng.y=cursor.y();
 334         ng.w=xadvance;
 335         ng.font=current_font;
 336         ng.font->lock();
 337         ng.glyph_index=glyphIndex;
 338         ng.flags=flags;
 339         glyphs.push_back(ng);
 340
 341         cursor+=ePoint(xadvance, 0);
 342         previous=glyphIndex;
 343         return 0;
 344 }
 345
 346 void eTextPara::calc_bbox()
 347 {
 348         boundBox.setLeft( 32000 );
 349         boundBox.setTop( 32000 );
 350         boundBox.setRight( -32000 );         // for each glyph image, compute its bounding box, translate it,
 351         boundBox.setBottom( -32000 );
 352         // and grow the string bbox
 353
 354         for (   glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 355         {
 356                 if ( i->bbox.left() < boundBox.left() )
 357                         boundBox.setLeft( i->bbox.left() );
 358                 if ( i->bbox.top() < boundBox.top() )
 359                         boundBox.setTop( i->bbox.top() );
 360                 if ( i->bbox.right() > boundBox.right() )
 361                         boundBox.setRight( i->bbox.right() );
 362                 if ( i->bbox.bottom() > boundBox.bottom() )
 363                         boundBox.setBottom( i->bbox.bottom() );
 364         }
 365 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
 366         bboxValid=1;
 367 }
 368
 369 void eTextPara::newLine(int flags)
 370 {
 371         if (maximum.width()<cursor.x())
 372                 maximum.setWidth(cursor.x());
 373         cursor.setX(left);
 374         previous=0;
 375         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 376         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap*1/2)>>6);
 377         if (maximum.height()<cursor.y())
 378                 maximum.setHeight(cursor.y());
 379         previous=0;
 380 }
 381
 382 eTextPara::~eTextPara()
 383 {
 384         clear();
 385         if (refcnt>=0)
 386                 eFatal("verdammt man der war noch gelockt :/\n");
 387 }
 388
 389 void eTextPara::destroy()
 390 {
 391         singleLock s(refcntlck);
 392
 393         if (!refcnt--)
 394                 delete this;
 395 }
 396
 397 eTextPara *eTextPara::grab()
 398 {
 399         singleLock s(refcntlck);
 400
 401         refcnt++;
 402         return this;
 403 }
 404
 405 void eTextPara::setFont(const gFont &font)
 406 {
 407         if (refcnt)
 408                 eFatal("mod. after lock");
 409         Font *fnt=fontRenderClass::getInstance()->getFont(font.family.c_str(), font.pointSize);
 410         if (!fnt)
 411                 eWarning("FONT '%s' MISSING!", font.family.c_str());
 412         setFont(fnt,
 413                 fontRenderClass::getInstance()->getFont(replacement_facename.c_str(), font.pointSize));
 414 }
 415
 416 eString eTextPara::replacement_facename;
 417
 418 void eTextPara::setFont(Font *fnt, Font *replacement)
 419 {
 420         if (refcnt)
 421                 eFatal("mod. after lock");
 422         if (!fnt)
 423                 return;
 424         if (current_font && !current_font->ref)
 425                 delete current_font;
 426         current_font=fnt;
 427         replacement_font=replacement;
 428         singleLock s(ftlock);
 429
 430                         // we ask for replacment_font first becauseof the cache
 431         if (replacement_font)
 432         {
 433                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager,
 434                                 &replacement_font->font.font, &replacement_face,
 435                                 &replacement_font->size)<0)
 436                 {
 437                         eDebug("FTC_Manager_Lookup_Size failed!");
 438                         return;
 439                 }
 440         }
 441         if (current_font)
 442         {
 443                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 444                 {
 445                         eDebug("FTC_Manager_Lookup_Size failed!");
 446                         return;
 447                 }
 448         }
 449         cache_current_font=&current_font->font.font;
 450         previous=0;
 451         use_kerning=FT_HAS_KERNING(current_face);
 452 }
 453
 454 void
 455 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
 456
 457 int eTextPara::renderString(const eString &string, int rflags)
 458 {
 459         singleLock s(ftlock);
 460
 461         if (refcnt)
 462                 eFatal("mod. after lock");
 463
 464         if (!current_font)
 465                 return -1;
 466
 467         if (cursor.y()==-1)
 468         {
 469                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
 470                 left=cursor.x();
 471         }
 472
 473         if (&current_font->font.font != cache_current_font)
 474         {
 475                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 476                 {
 477                         eDebug("FTC_Manager_Lookup_Size failed!");
 478                         return -1;
 479                 }
 480                 cache_current_font=&current_font->font.font;
 481         }
 482
 483         std::vector<unsigned long> uc_string, uc_visual;
 484         uc_string.reserve(string.length());
 485
 486         std::string::const_iterator p(string.begin());
 487
 488         while(p != string.end())
 489         {
 490                 unsigned int unicode=*p++;
 491
 492                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
 493                 {
 494                         if ((unicode & 0xE0)==0xC0) // two bytes
 495                         {
 496                                 unicode&=0x1F;
 497                                 unicode<<=6;
 498                                 if (p != string.end())
 499                                         unicode|=(*p++)&0x3F;
 500                         } else if ((unicode & 0xF0)==0xE0) // three bytes
 501                         {
 502                                 unicode&=0x0F;
 503                                 unicode<<=6;
 504                                 if (p != string.end())
 505                                         unicode|=(*p++)&0x3F;
 506                                 unicode<<=6;
 507                                 if (p != string.end())
 508                                         unicode|=(*p++)&0x3F;
 509                         } else if ((unicode & 0xF8)==0xF0) // four bytes
 510                         {
 511                                 unicode&=0x07;
 512                                 unicode<<=6;
 513                                 if (p != string.end())
 514                                         unicode|=(*p++)&0x3F;
 515                                 unicode<<=6;
 516                                 if (p != string.end())
 517                                         unicode|=(*p++)&0x3F;
 518                                 unicode<<=6;
 519                                 if (p != string.end())
 520                                         unicode|=(*p++)&0x3F;
 521                         }
 522                 }
 523                 uc_string.push_back(unicode);
 524         }
 525
 526         std::vector<unsigned long> uc_shape;
 527
 528                 // character -> glyph conversion
 529         shape(uc_shape, uc_string);
 530
 531                 // now do the usual logical->visual reordering
 532 #ifdef HAVE_FRIBIDI
 533         FriBidiCharType dir=FRIBIDI_TYPE_ON;
 534         {
 535                 int size=uc_shape.size();
 536                 uc_visual.resize(size);
 537                 // gaaanz lahm, aber anders geht das leider nicht, sorry.
 538                 FriBidiChar array[size], target[size];
 539                 std::copy(uc_shape.begin(), uc_shape.end(), array);
 540                 fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
 541                 uc_visual.assign(target, target+size);
 542         }
 543 #else
 544         uc_visual=uc_shape;
 545 #endif
 546
 547         glyphs.reserve(uc_visual.size());
 548
 549         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
 550                 i != uc_visual.end(); ++i)
 551         {
 552                 int isprintable=1;
 553                 int flags=0;
 554                 if (!(rflags&RS_DIRECT))
 555                 {
 556                         switch (*i)
 557                         {
 558                         case '\\':
 559                         {
 560                                 unsigned long c = *(i+1);
 561                                 switch (c)
 562                                 {
 563                                         case 'n':
 564                                                 i++;
 565                                                 goto newline;
 566                                         case 't':
 567                                                 i++;
 568                                                 goto tab;
 569                                         case 'r':
 570                                                 i++;
 571                                                 goto nprint;
 572                                         default:
 573                                         ;
 574                                 }
 575                                 break;
 576                         }
 577                         case '\t':
 578 tab:            isprintable=0;
 579                                 cursor+=ePoint(current_font->tabwidth, 0);
 580                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
 581                                 break;
 582                         case 0x8A:
 583                         case 0xE08A:
 584                         case '\n':
 585 newline:isprintable=0;
 586                                 newLine(rflags);
 587                                 flags|=GS_ISFIRST;
 588                                 break;
 589                         case '\r':
 590                         case 0x86: case 0xE086:
 591                         case 0x87: case 0xE087:
 592 nprint: isprintable=0;
 593                                 break;
 594                         case ' ':
 595                                 flags|=GS_ISSPACE;
 596                         default:
 597                                 break;
 598                         }
 599                 }
 600                 if (isprintable)
 601                 {
 602                         FT_UInt index;
 603
 604                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(current_face, *i);
 605
 606                         if (!index)
 607                         {
 608                                 if (replacement_face)
 609                                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(replacement_face, *i);
 610
 611                                 if (!index)
 612                                         eDebug("unicode %d ('%c') not present", *i, *i);
 613                                 else
 614                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
 615                         } else
 616                                 appendGlyph(current_font, current_face, index, flags, rflags);
 617                 }
 618         }
 619         bboxValid=false;
 620         calc_bbox();
 621 #ifdef HAVE_FRIBIDI
 622         if (dir & FRIBIDI_MASK_RTL)
 623                 realign(dirRight);
 624 #endif
 625         return 0;
 626 }
 627
 628 void eTextPara::blit(gPixmapDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
 629 {
 630         singleLock s(ftlock);
 631
 632         if (!current_font)
 633                 return;
 634
 635         if (&current_font->font.font != cache_current_font)
 636         {
 637                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 638                 {
 639                         eDebug("FTC_Manager_Lookup_Size failed!");
 640                         return;
 641                 }
 642                 cache_current_font=&current_font->font.font;
 643         }
 644
 645         ePtr<gPixmap> target;
 646         dc.getPixmap(target);
 647
 648         register int opcode;
 649         gColor *lookup8=0;
 650         __u32 lookup32[16];
 651
 652         if (target->bpp == 8)
 653         {
 654                 if (target->clut.data)
 655                 {
 656                         lookup8=getColor(target->clut, background, foreground).lookup;
 657                         opcode=0;
 658                 } else
 659                         opcode=1;
 660         } else if (target->bpp == 32)
 661         {
 662                 opcode=3;
 663                 if (target->clut.data)
 664                 {
 665                         lookup8=getColor(target->clut, background, foreground).lookup;
 666                         for (int i=0; i<16; ++i)
 667                                 lookup32[i]=((target->clut.data[lookup8[i]].a<<24)|
 668                                         (target->clut.data[lookup8[i]].r<<16)|
 669                                         (target->clut.data[lookup8[i]].g<<8)|
 670                                         (target->clut.data[lookup8[i]].b))^0xFF000000;
 671                 } else
 672                 {
 673                         for (int i=0; i<16; ++i)
 674                                 lookup32[i]=(0x010101*i)|0xFF000000;
 675                 }
 676         } else
 677         {
 678                 eWarning("can't render to %dbpp", target->bpp);
 679                 return;
 680         }
 681
 682         eRect clip(0, 0, target->x, target->y);
 683         clip&=dc.getClip();
 684
 685         int buffer_stride=target->stride;
 686
 687         for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 688         {
 689                 static FTC_SBit glyph_bitmap;
 690                 if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
 691                         continue;
 692                 int rx=i->x+glyph_bitmap->left + offset.x();
 693                 int ry=i->y-glyph_bitmap->top  + offset.y();
 694                 __u8 *d=(__u8*)(target->data)+buffer_stride*ry+rx*target->bypp;
 695                 __u8 *s=glyph_bitmap->buffer;
 696                 register int sx=glyph_bitmap->width;
 697                 int sy=glyph_bitmap->height;
 698                 if ((sy+ry) >= clip.bottom())
 699                         sy=clip.bottom()-ry;
 700                 if ((sx+rx) >= clip.right())
 701                         sx=clip.right()-rx;
 702                 if (rx < clip.left())
 703                 {
 704                         int diff=clip.left()-rx;
 705                         s+=diff;
 706                         sx-=diff;
 707                         rx+=diff;
 708                         d+=diff*target->bypp;
 709                 }
 710                 if (ry < clip.top())
 711                 {
 712                         int diff=clip.top()-ry;
 713                         s+=diff*glyph_bitmap->pitch;
 714                         sy-=diff;
 715                         ry+=diff;
 716                         d+=diff*buffer_stride;
 717                 }
 718                 if (sx>0)
 719                         for (int ay=0; ay<sy; ay++)
 720                         {
 721                                 if (!opcode)            // 4bit lookup to 8bit
 722                                 {
 723                                         register __u8 *td=d;
 724                                         register int ax;
 725                                         for (ax=0; ax<sx; ax++)
 726                                         {
 727                                                 register int b=(*s++)>>4;
 728                                                 if(b)
 729                                                         *td++=lookup8[b];
 730                                                 else
 731                                                         td++;
 732                                         }
 733                                 } else if (opcode == 1) // 8bit direct
 734                                 {
 735                                         register __u8 *td=d;
 736                                         register int ax;
 737                                         for (ax=0; ax<sx; ax++)
 738                                         {
 739                                                 register int b=*s++;
 740                                                 *td++^=b;
 741                                         }
 742                                 } else
 743                                 {
 744                                         register __u32 *td=(__u32*)d;
 745                                         register int ax;
 746                                         for (ax=0; ax<sx; ax++)
 747                                         {
 748                                                 register int b=(*s++)>>4;
 749                                                 if(b)
 750                                                         *td++=lookup32[b];
 751                                                 else
 752                                                         td++;
 753                                         }
 754                                 }
 755                                 s+=glyph_bitmap->pitch-sx;
 756                                 d+=buffer_stride;
 757                         }
 758         }
 759 }
 760
 761 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
 762 {
 763         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
 764         if (dir==dirLeft)
 765                 return;
 766         while (c != glyphs.end())
 767         {
 768                 int linelength=0;
 769                 int numspaces=0, num=0;
 770                 begin=end;
 771
 772                 ASSERT( end != glyphs.end());
 773
 774                         // zeilenende suchen
 775                 do {
 776                         last=end;
 777                         ++end;
 778                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
 779                         // end zeigt jetzt auf begin der naechsten zeile
 780
 781                 for (c=begin; c!=end; ++c)
 782                 {
 783                                 // space am zeilenende skippen
 784                         if ((c==last) && (c->flags&GS_ISSPACE))
 785                                 continue;
 786
 787                         if (c->flags&GS_ISSPACE)
 788                                 numspaces++;
 789                         linelength+=c->w;
 790                         num++;
 791                 }
 792                 if (!num)               // line mit nur einem space
 793                         continue;
 794
 795                 switch (dir)
 796                 {
 797                 case dirRight:
 798                 case dirCenter:
 799                 {
 800                         int offset=area.width()-linelength;
 801                         if (dir==dirCenter)
 802                                 offset/=2;
 803                         offset+=area.left();
 804                         while (begin != end)
 805                         {
 806                                 begin->bbox.moveBy(offset-begin->x,0);
 807                                 begin->x=offset;
 808                                 offset+=begin->w;
 809                                 ++begin;
 810                         }
 811                         break;
 812                 }
 813                 case dirBlock:
 814                 {
 815                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
 816                                 continue;
 817                         int spacemode;
 818                         if (numspaces)
 819                                 spacemode=1;
 820                         else
 821                                 spacemode=0;
 822                         if ((!spacemode) && (num<2))
 823                                 break;
 824                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
 825                         int curoff=0;
 826                         while (begin != end)
 827                         {
 828                                 int doadd=0;
 829                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
 830                                         doadd=1;
 831                                 begin->x+=curoff>>8;
 832                                 begin->bbox.moveBy(curoff>>8,0);
 833                                 if (doadd)
 834                                         curoff+=off;
 835                                 ++begin;
 836                         }
 837                         break;
 838                 }
 839                 }
 840         }
 841         bboxValid=false;
 842         calc_bbox();
 843 }
 844
 845 void eTextPara::clear()
 846 {
 847         singleLock s(ftlock);
 848
 849         for (glyphString::iterator i(glyphs.begin()); i!=glyphs.end(); ++i)
 850                 i->font->unlock();
 851
 852         glyphs.clear();
 853 }
 854
 855 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");