lib/gdi/font.cpp

   1 #include <lib/gdi/font.h>
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <ctype.h>
   6 #include <pthread.h>
   7 #include <sys/types.h>
   8 #include <unistd.h>
   9
  10 // use this for init Freetype...
  11 #include <ft2build.h>
  12 #include FT_FREETYPE_H
  13
  14 #include <lib/base/eerror.h>
  15 #include <lib/gdi/lcd.h>
  16 #include <lib/gdi/grc.h>
  17 #include <lib/base/elock.h>
  18 #include <lib/base/init.h>
  19 #include <lib/base/init_num.h>
  20
  21 #define HAVE_FRIBIDI
  22 // until we have it in the cdk
  23
  24 #ifdef HAVE_FRIBIDI
  25 #include <fribidi/fribidi.h>
  26 #endif
  27
  28 #include <map>
  29
  30 fontRenderClass *fontRenderClass::instance;
  31
  32 static pthread_mutex_t ftlock=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
  33 static pthread_mutex_t refcntlck=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
  34
  35 static FTC_Font cache_current_font=0;
  36
  37 struct fntColorCacheKey
  38 {
  39         gRGB start, end;
  40         fntColorCacheKey(const gRGB &start, const gRGB &end)
  41                 : start(start), end(end)
  42         {
  43         }
  44         bool operator <(const fntColorCacheKey &c) const
  45         {
  46                 if (start < c.start)
  47                         return 1;
  48                 else if (start == c.start)
  49                         return end < c.end;
  50                 return 0;
  51         }
  52 };
  53
  54 std::map<fntColorCacheKey,gLookup> colorcache;
  55
  56 static gLookup &getColor(const gPalette &pal, const gRGB &start, const gRGB &end)
  57 {
  58         fntColorCacheKey key(start, end);
  59         std::map<fntColorCacheKey,gLookup>::iterator i=colorcache.find(key);
  60         if (i != colorcache.end())
  61                 return i->second;
  62         gLookup &n=colorcache.insert(std::pair<fntColorCacheKey,gLookup>(key,gLookup())).first->second;
  63 //      eDebug("[FONT] creating new font color cache entry %02x%02x%02x%02x .. %02x%02x%02x%02x", start.a, start.r, start.g, start.b,
  64 //              end.a, end.r, end.g, end.b);
  65         n.build(16, pal, start, end);
  66 //      for (int i=0; i<16; i++)
  67 //              eDebugNoNewLine("%02x|%02x%02x%02x%02x ", (int)n.lookup[i], pal.data[n.lookup[i]].a, pal.data[n.lookup[i]].r, pal.data[n.lookup[i]].g, pal.data[n.lookup[i]].b);
  68 //      eDebug("");
  69         return n;
  70 }
  71
  72 fontRenderClass *fontRenderClass::getInstance()
  73 {
  74         return instance;
  75 }
  76
  77 FT_Error myFTC_Face_Requester(FTC_FaceID        face_id,
  78                                                                                                                         FT_Library      library,
  79                                                                                                                         FT_Pointer      request_data,
  80                                                                                                                         FT_Face*                aface)
  81 {
  82         return ((fontRenderClass*)request_data)->FTC_Face_Requester(face_id, aface);
  83 }
  84
  85
  86 FT_Error fontRenderClass::FTC_Face_Requester(FTC_FaceID face_id, FT_Face* aface)
  87 {
  88         fontListEntry *font=(fontListEntry *)face_id;
  89         if (!font)
  90                 return -1;
  91
  92 //      eDebug("[FONT] FTC_Face_Requester (%s)", font->face.c_str());
  93
  94         int error;
  95         if ((error=FT_New_Face(library, font->filename.c_str(), 0, aface)))
  96         {
  97                 eDebug(" failed: %s", strerror(error));
  98                 return error;
  99         }
 100         FT_Select_Charmap(*aface, ft_encoding_unicode);
 101         return 0;
 102 }
 103
 104 FTC_FaceID fontRenderClass::getFaceID(const std::string &face)
 105 {
 106         for (fontListEntry *f=font; f; f=f->next)
 107         {
 108                 if (f->face == face)
 109                         return (FTC_FaceID)f;
 110         }
 111         return 0;
 112 }
 113
 114 FT_Error fontRenderClass::getGlyphBitmap(FTC_Image_Desc *font, FT_ULong glyph_index, FTC_SBit *sbit)
 115 {
 116         FT_Error res=FTC_SBit_Cache_Lookup(sbitsCache, font, glyph_index, sbit);
 117         return res;
 118 }
 119
 120 std::string fontRenderClass::AddFont(const std::string &filename, const std::string &name, int scale)
 121 {
 122         eDebugNoNewLine("[FONT] adding font %s...", filename.c_str());
 123         fflush(stdout);
 124         int error;
 125         fontListEntry *n=new fontListEntry;
 126
 127         n->scale=scale;
 128         FT_Face face;
 129         singleLock s(ftlock);
 130
 131         if ((error=FT_New_Face(library, filename.c_str(), 0, &face)))
 132                 eFatal(" failed: %s", strerror(error));
 133
 134         n->filename=filename;
 135         n->face=name;
 136         FT_Done_Face(face);
 137
 138         n->next=font;
 139         eDebug("OK (%s)", n->face.c_str());
 140         font=n;
 141
 142         return n->face;
 143 }
 144
 145 fontRenderClass::fontListEntry::~fontListEntry()
 146 {
 147 }
 148
 149 fontRenderClass::fontRenderClass(): fb(fbClass::getInstance())
 150 {
 151         instance=this;
 152         eDebug("[FONT] initializing lib...");
 153         {
 154                 if (FT_Init_FreeType(&library))
 155                 {
 156                         eDebug("[FONT] initializing failed.");
 157                         return;
 158                 }
 159         }
 160         eDebug("[FONT] loading fonts...");
 161         fflush(stdout);
 162         font=0;
 163
 164         int maxbytes=4*1024*1024;
 165         eDebug("[FONT] Intializing font cache, using max. %dMB...", maxbytes/1024/1024);
 166         fflush(stdout);
 167         {
 168                 if (FTC_Manager_New(library, 8, 8, maxbytes, myFTC_Face_Requester, this, &cacheManager))
 169                 {
 170                         eDebug("[FONT] initializing font cache failed!");
 171                         return;
 172                 }
 173                 if (!cacheManager)
 174                 {
 175                         eDebug("[FONT] initializing font cache manager error.");
 176                         return;
 177                 }
 178                 if (FTC_SBit_Cache_New(cacheManager, &sbitsCache))
 179                 {
 180                         eDebug("[FONT] initializing font cache sbit failed!");
 181                         return;
 182                 }
 183                 if (FTC_Image_Cache_New(cacheManager, &imageCache))
 184                 {
 185                         eDebug("[FONT] initializing font cache imagecache failed!");
 186                 }
 187         }
 188         return;
 189 }
 190
 191 float fontRenderClass::getLineHeight(const gFont& font)
 192 {
 193         if (!instance)
 194                 return 0;
 195         ePtr<Font> fnt;
 196         getFont(fnt, font.family.c_str(), font.pointSize);
 197         if (!fnt)
 198                 return 0;
 199         singleLock s(ftlock);
 200         FT_Face current_face;
 201         if (FTC_Manager_Lookup_Size(cacheManager, &fnt->font.font, &current_face, &fnt->size)<0)
 202         {
 203                 delete fnt;
 204                 eDebug("FTC_Manager_Lookup_Size failed!");
 205                 return 0;
 206         }
 207         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 208         float height=(current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)/64.0;
 209         return height;
 210 }
 211
 212 fontRenderClass::~fontRenderClass()
 213 {
 214         singleLock s(ftlock);
 215         while(font)
 216         {
 217                 fontListEntry *f=font;
 218                 font=font->next;
 219                 delete f;
 220         }
 221 //      auskommentiert weil freetype und enigma die kritische masse des suckens ueberschreiten.
 222 //      FTC_Manager_Done(cacheManager);
 223 //      FT_Done_FreeType(library);
 224 }
 225
 226 int fontRenderClass::getFont(ePtr<Font> &font, const std::string &face, int size, int tabwidth)
 227 {
 228         FTC_FaceID id=getFaceID(face);
 229         if (!id)
 230         {
 231                 font = 0;
 232                 return -1;
 233         }
 234         font = new Font(this, id, size * ((fontListEntry*)id)->scale / 100, tabwidth);
 235         return 0;
 236 }
 237
 238 void addFont(const char *filename, const char *alias, int scale_factor, int is_replacement)
 239 {
 240         fontRenderClass::getInstance()->AddFont(filename, alias, scale_factor);
 241         if (is_replacement)
 242                 eTextPara::setReplacementFont(alias);
 243 }
 244
 245 DEFINE_REF(Font);
 246
 247 Font::Font(fontRenderClass *render, FTC_FaceID faceid, int isize, int tw): tabwidth(tw)
 248 {
 249         renderer=render;
 250         font.font.face_id=faceid;
 251         font.font.pix_width     = isize;
 252         font.font.pix_height = isize;
 253         font.image_type = ftc_image_grays;
 254         height=isize;
 255         if (tabwidth==-1)
 256                 tabwidth=8*isize;
 257 //      font.image_type |= ftc_image_flag_autohinted;
 258 }
 259
 260 FT_Error Font::getGlyphBitmap(FT_ULong glyph_index, FTC_SBit *sbit)
 261 {
 262         return renderer->getGlyphBitmap(&font, glyph_index, sbit);
 263 }
 264
 265 Font::~Font()
 266 {
 267 }
 268
 269 DEFINE_REF(eTextPara);
 270
 271 int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt glyphIndex, int flags, int rflags)
 272 {
 273         FTC_SBit glyph;
 274         if (current_font->getGlyphBitmap(glyphIndex, &glyph))
 275                 return 1;
 276
 277         int nx=cursor.x();
 278
 279         nx+=glyph->xadvance;
 280
 281         if (
 282                         (rflags&RS_WRAP) &&
 283                         (nx >= area.right())
 284                 )
 285         {
 286                 int cnt = 0;
 287                 glyphString::reverse_iterator i(glyphs.rbegin());
 288                 while (i != glyphs.rend())
 289                 {
 290                         if (i->flags&(GS_ISSPACE|GS_ISFIRST))
 291                                 break;
 292                         cnt++;
 293                         ++i;
 294                 }
 295                 if (i != glyphs.rend()
 296                         && ((i->flags&(GS_ISSPACE|GS_ISFIRST))==GS_ISSPACE)
 297                         && cnt )
 298                 {
 299                         --i;
 300                         int linelength=cursor.x()-i->x;
 301                         i->flags|=GS_ISFIRST;
 302                         ePoint offset=ePoint(i->x, i->y);
 303                         newLine(rflags);
 304                         offset-=cursor;
 305                         do
 306                         {
 307                                 i->x-=offset.x();
 308                                 i->y-=offset.y();
 309                                 i->bbox.moveBy(-offset.x(), -offset.y());
 310                         }
 311                         while (i-- != glyphs.rbegin()); // rearrange them into the next line
 312                         cursor+=ePoint(linelength, 0);  // put the cursor after that line
 313                 }
 314                 else
 315                 {
 316                         if (cnt)
 317                         {
 318                                 newLine(rflags);
 319                                 flags|=GS_ISFIRST;
 320                         }
 321                 }
 322         }
 323
 324         int xadvance=glyph->xadvance, kern=0;
 325
 326         if (previous && use_kerning)
 327         {
 328                 FT_Vector delta;
 329                 FT_Get_Kerning(current_face, previous, glyphIndex, ft_kerning_default, &delta);
 330                 kern=delta.x>>6;
 331         }
 332
 333         pGlyph ng;
 334         ng.bbox.setLeft( (flags&GS_ISFIRST|cursor.x()-1)+glyph->left );
 335         ng.bbox.setTop( cursor.y() - glyph->top );
 336         ng.bbox.setWidth( glyph->width );
 337         ng.bbox.setHeight( glyph->height );
 338
 339         xadvance += kern;
 340         ng.bbox.setWidth(xadvance);
 341
 342         ng.x = cursor.x()+kern;
 343         ng.y = cursor.y();
 344         ng.w = xadvance;
 345         ng.font = current_font;
 346         ng.glyph_index = glyphIndex;
 347         ng.flags = flags;
 348         glyphs.push_back(ng);
 349
 350         cursor += ePoint(xadvance, 0);
 351         previous = glyphIndex;
 352         return 0;
 353 }
 354
 355 void eTextPara::calc_bbox()
 356 {
 357         if (!glyphs.size())
 358         {
 359                 bboxValid = 0;
 360                 boundBox = eRect();
 361                 return;
 362         }
 363
 364         bboxValid = 1;
 365
 366         glyphString::iterator i(glyphs.begin());
 367
 368         boundBox = i->bbox;
 369         ++i;
 370
 371         for (; i != glyphs.end(); ++i)
 372         {
 373                 if ( i->flags & GS_ISSPACE )
 374                         continue;
 375                 if ( i->bbox.left() < boundBox.left() )
 376                         boundBox.setLeft( i->bbox.left() );
 377                 if ( i->bbox.top() < boundBox.top() )
 378                         boundBox.setTop( i->bbox.top() );
 379                 if ( i->bbox.right() > boundBox.right() )
 380                         boundBox.setRight( i->bbox.right() );
 381                 if ( i->bbox.bottom() > boundBox.bottom() )
 382                         boundBox.setBottom( i->bbox.bottom() );
 383         }
 384 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
 385 }
 386
 387 void eTextPara::newLine(int flags)
 388 {
 389         if (maximum.width()<cursor.x())
 390                 maximum.setWidth(cursor.x());
 391         cursor.setX(left);
 392         previous=0;
 393         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 394         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)>>6);
 395         if (maximum.height()<cursor.y())
 396                 maximum.setHeight(cursor.y());
 397         previous=0;
 398 }
 399
 400 eTextPara::~eTextPara()
 401 {
 402         clear();
 403 }
 404
 405 void eTextPara::setFont(const gFont *font)
 406 {
 407         ePtr<Font> fnt, replacement;
 408         fontRenderClass::getInstance()->getFont(fnt, font->family.c_str(), font->pointSize);
 409         if (!fnt)
 410                 eWarning("FONT '%s' MISSING!", font->family.c_str());
 411         fontRenderClass::getInstance()->getFont(replacement, replacement_facename.c_str(), font->pointSize);
 412         setFont(fnt, replacement);
 413 }
 414
 415 std::string eTextPara::replacement_facename;
 416 std::set<int> eTextPara::forced_replaces;
 417
 418 void eTextPara::setFont(Font *fnt, Font *replacement)
 419 {
 420         if (!fnt)
 421                 return;
 422         current_font=fnt;
 423         replacement_font=replacement;
 424         singleLock s(ftlock);
 425
 426                         // we ask for replacment_font first becauseof the cache
 427         if (replacement_font)
 428         {
 429                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager,
 430                                 &replacement_font->font.font, &replacement_face,
 431                                 &replacement_font->size)<0)
 432                 {
 433                         eDebug("FTC_Manager_Lookup_Size failed!");
 434                         return;
 435                 }
 436         }
 437         if (current_font)
 438         {
 439                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 440                 {
 441                         eDebug("FTC_Manager_Lookup_Size failed!");
 442                         return;
 443                 }
 444         }
 445         cache_current_font=&current_font->font.font;
 446         previous=0;
 447         use_kerning=FT_HAS_KERNING(current_face);
 448 }
 449
 450 void
 451 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
 452
 453 int eTextPara::renderString(const char *string, int rflags)
 454 {
 455         singleLock s(ftlock);
 456
 457         if (!current_font)
 458                 return -1;
 459
 460         if (cursor.y()==-1)
 461         {
 462                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
 463                 left=cursor.x();
 464         }
 465
 466         if (&current_font->font.font != cache_current_font)
 467         {
 468                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 469                 {
 470                         eDebug("FTC_Manager_Lookup_Size failed!");
 471                         return -1;
 472                 }
 473                 cache_current_font=&current_font->font.font;
 474         }
 475
 476         std::vector<unsigned long> uc_string, uc_visual;
 477         if (string)
 478                 uc_string.reserve(strlen(string));
 479
 480         const char *p = string ? string : "";
 481
 482         while (*p)
 483         {
 484                 unsigned int unicode=(unsigned char)*p++;
 485
 486                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
 487                 {
 488                         if ((unicode & 0xE0)==0xC0) // two bytes
 489                         {
 490                                 unicode&=0x1F;
 491                                 unicode<<=6;
 492                                 if (*p)
 493                                         unicode|=(*p++)&0x3F;
 494                         } else if ((unicode & 0xF0)==0xE0) // three bytes
 495                         {
 496                                 unicode&=0x0F;
 497                                 unicode<<=6;
 498                                 if (*p)
 499                                         unicode|=(*p++)&0x3F;
 500                                 unicode<<=6;
 501                                 if (*p)
 502                                         unicode|=(*p++)&0x3F;
 503                         } else if ((unicode & 0xF8)==0xF0) // four bytes
 504                         {
 505                                 unicode&=0x07;
 506                                 unicode<<=6;
 507                                 if (*p)
 508                                         unicode|=(*p++)&0x3F;
 509                                 unicode<<=6;
 510                                 if (*p)
 511                                         unicode|=(*p++)&0x3F;
 512                                 unicode<<=6;
 513                                 if (*p)
 514                                         unicode|=(*p++)&0x3F;
 515                         }
 516                 }
 517                 uc_string.push_back(unicode);
 518         }
 519
 520         std::vector<unsigned long> uc_shape;
 521
 522                 // character -> glyph conversion
 523         shape(uc_shape, uc_string);
 524
 525                 // now do the usual logical->visual reordering
 526 #ifdef HAVE_FRIBIDI
 527         FriBidiCharType dir=FRIBIDI_TYPE_ON;
 528         {
 529                 int size=uc_shape.size();
 530                 uc_visual.resize(size);
 531                 // gaaanz lahm, aber anders geht das leider nicht, sorry.
 532                 FriBidiChar array[size], target[size];
 533                 std::copy(uc_shape.begin(), uc_shape.end(), array);
 534                 fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
 535                 uc_visual.assign(target, target+size);
 536         }
 537 #else
 538         uc_visual=uc_shape;
 539 #endif
 540
 541         glyphs.reserve(uc_visual.size());
 542
 543         int nextflags = 0;
 544
 545         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
 546                 i != uc_visual.end(); ++i)
 547         {
 548                 int isprintable=1;
 549                 int flags = nextflags;
 550                 nextflags = 0;
 551                 if (!(rflags&RS_DIRECT))
 552                 {
 553                         switch (*i)
 554                         {
 555                         case '\\':
 556                         {
 557                                 unsigned long c = *(i+1);
 558                                 switch (c)
 559                                 {
 560                                         case 'n':
 561                                                 i++;
 562                                                 goto newline;
 563                                         case 't':
 564                                                 i++;
 565                                                 goto tab;
 566                                         case 'r':
 567                                                 i++;
 568                                                 goto nprint;
 569                                         default:
 570                                         ;
 571                                 }
 572                                 break;
 573                         }
 574                         case '\t':
 575 tab:            isprintable=0;
 576                                 cursor+=ePoint(current_font->tabwidth, 0);
 577                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
 578                                 break;
 579                         case 0x8A:
 580                         case 0xE08A:
 581                         case '\n':
 582 newline:isprintable=0;
 583                                 newLine(rflags);
 584                                 nextflags|=GS_ISFIRST;
 585                                 break;
 586                         case '\r':
 587                         case 0x86: case 0xE086:
 588                         case 0x87: case 0xE087:
 589 nprint: isprintable=0;
 590                                 break;
 591                         case ' ':
 592                                 flags|=GS_ISSPACE;
 593                         default:
 594                                 break;
 595                         }
 596                 }
 597                 if (isprintable)
 598                 {
 599                         FT_UInt index = 0;
 600
 601                         if (forced_replaces.find(*i) == forced_replaces.end())
 602                                 index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(current_face, *i);
 603
 604                         if (!index)
 605                         {
 606                                 if (replacement_face)
 607                                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(replacement_face, *i);
 608
 609                                 if (!index)
 610                                         eDebug("unicode %d ('%c') not present", *i, *i);
 611                                 else
 612                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
 613                         } else
 614                                 appendGlyph(current_font, current_face, index, flags, rflags);
 615                 }
 616         }
 617         bboxValid=false;
 618         calc_bbox();
 619 #ifdef HAVE_FRIBIDI
 620         if (dir & FRIBIDI_MASK_RTL)
 621                 realign(dirRight);
 622 #endif
 623         return 0;
 624 }
 625
 626 void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
 627 {
 628         singleLock s(ftlock);
 629
 630         if (!current_font)
 631                 return;
 632
 633         if (&current_font->font.font != cache_current_font)
 634         {
 635                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 636                 {
 637                         eDebug("FTC_Manager_Lookup_Size failed!");
 638                         return;
 639                 }
 640                 cache_current_font=&current_font->font.font;
 641         }
 642
 643         ePtr<gPixmap> target;
 644         dc.getPixmap(target);
 645         gSurface *surface = target->surface;
 646
 647         register int opcode;
 648
 649         gColor *lookup8, lookup8_invert[16];
 650         gColor *lookup8_normal=0;
 651
 652         __u32 lookup32_normal[16], lookup32_invert[16], *lookup32;
 653
 654         if (surface->bpp == 8)
 655         {
 656                 if (surface->clut.data)
 657                 {
 658                         lookup8_normal=getColor(surface->clut, background, foreground).lookup;
 659
 660                         int i;
 661                         for (i=0; i<16; ++i)
 662                                 lookup8_invert[i] = lookup8_normal[i^0xF];
 663
 664                         opcode=0;
 665                 } else
 666                         opcode=1;
 667         } else if (surface->bpp == 32)
 668         {
 669                 opcode=3;
 670                 if (surface->clut.data)
 671                 {
 672                         lookup8=getColor(surface->clut, background, foreground).lookup;
 673                         for (int i=0; i<16; ++i)
 674                                 lookup32_normal[i]=((surface->clut.data[lookup8[i]].a<<24)|
 675                                         (surface->clut.data[lookup8[i]].r<<16)|
 676                                         (surface->clut.data[lookup8[i]].g<<8)|
 677                                         (surface->clut.data[lookup8[i]].b))^0xFF000000;
 678                 } else
 679                 {
 680                         for (int i=0; i<16; ++i)
 681                                 lookup32_normal[i]=(0x010101*i)|0xFF000000;
 682                 }
 683                 for (int i=0; i<16; ++i)
 684                         lookup32_invert[i]=lookup32_normal[i^0xF];
 685         } else
 686         {
 687                 eWarning("can't render to %dbpp", surface->bpp);
 688                 return;
 689         }
 690
 691         gRegion area(eRect(0, 0, surface->x, surface->y));
 692         gRegion clip = dc.getClip() & area;
 693
 694         int buffer_stride=surface->stride;
 695
 696         for (unsigned int c = 0; c < clip.rects.size(); ++c)
 697         {
 698                 for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 699                 {
 700                         if (!(i->flags & GS_INVERT))
 701                         {
 702                                 lookup8 = lookup8_normal;
 703                                 lookup32 = lookup32_normal;
 704                         } else
 705                         {
 706                                 lookup8 = lookup8_invert;
 707                                 lookup32 = lookup32_invert;
 708                         }
 709
 710                         static FTC_SBit glyph_bitmap;
 711                         if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
 712                                 continue;
 713                         int rx=i->x+glyph_bitmap->left + offset.x();
 714                         int ry=i->y-glyph_bitmap->top  + offset.y();
 715
 716                         __u8 *d=(__u8*)(surface->data)+buffer_stride*ry+rx*surface->bypp;
 717                         __u8 *s=glyph_bitmap->buffer;
 718                         register int sx=glyph_bitmap->width;
 719                         int sy=glyph_bitmap->height;
 720                         if ((sy+ry) >= clip.rects[c].bottom())
 721                                 sy=clip.rects[c].bottom()-ry;
 722                         if ((sx+rx) >= clip.rects[c].right())
 723                                 sx=clip.rects[c].right()-rx;
 724                         if (rx < clip.rects[c].left())
 725                         {
 726                                 int diff=clip.rects[c].left()-rx;
 727                                 s+=diff;
 728                                 sx-=diff;
 729                                 rx+=diff;
 730                                 d+=diff*surface->bypp;
 731                         }
 732                         if (ry < clip.rects[c].top())
 733                         {
 734                                 int diff=clip.rects[c].top()-ry;
 735                                 s+=diff*glyph_bitmap->pitch;
 736                                 sy-=diff;
 737                                 ry+=diff;
 738                                 d+=diff*buffer_stride;
 739                         }
 740                         if (sx>0)
 741                                 for (int ay=0; ay<sy; ay++)
 742                                 {
 743                                         if (!opcode)            // 4bit lookup to 8bit
 744                                         {
 745                                                 register __u8 *td=d;
 746                                                 register int ax;
 747
 748                                                 for (ax=0; ax<sx; ax++)
 749                                                 {
 750                                                         register int b=(*s++)>>4;
 751                                                         if(b)
 752                                                                 *td++=lookup8[b];
 753                                                         else
 754                                                                 td++;
 755                                                 }
 756                                         } else if (opcode == 1) // 8bit direct
 757                                         {
 758                                                 register __u8 *td=d;
 759                                                 register int ax;
 760                                                 for (ax=0; ax<sx; ax++)
 761                                                 {
 762                                                         register int b=*s++;
 763                                                         *td++^=b;
 764                                                 }
 765                                         } else
 766                                         {
 767                                                 register __u32 *td=(__u32*)d;
 768                                                 register int ax;
 769                                                 for (ax=0; ax<sx; ax++)
 770                                                 {
 771                                                         register int b=(*s++)>>4;
 772                                                         if(b)
 773                                                                 *td++=lookup32[b];
 774                                                         else
 775                                                                 td++;
 776                                                 }
 777                                         }
 778                                         s+=glyph_bitmap->pitch-sx;
 779                                         d+=buffer_stride;
 780                                 }
 781                 }
 782         }
 783 }
 784
 785 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
 786 {
 787         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
 788         if (dir==dirLeft)
 789                 return;
 790         while (c != glyphs.end())
 791         {
 792                 int linelength=0;
 793                 int numspaces=0, num=0;
 794                 begin=end;
 795
 796                 ASSERT( end != glyphs.end());
 797
 798                         // zeilenende suchen
 799                 do {
 800                         last=end;
 801                         ++end;
 802                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
 803                         // end zeigt jetzt auf begin der naechsten zeile
 804
 805                 for (c=begin; c!=end; ++c)
 806                 {
 807                                 // space am zeilenende skippen
 808                         if ((c==last) && (c->flags&GS_ISSPACE))
 809                                 continue;
 810
 811                         if (c->flags&GS_ISSPACE)
 812                                 numspaces++;
 813                         linelength+=c->w;
 814                         num++;
 815                 }
 816
 817                 if (!num)               // line mit nur einem space
 818                         continue;
 819
 820                 switch (dir)
 821                 {
 822                 case dirRight:
 823                 case dirCenter:
 824                 {
 825                         int offset=area.width()-linelength;
 826                         if (dir==dirCenter)
 827                                 offset/=2;
 828                         offset+=area.left();
 829                         while (begin != end)
 830                         {
 831                                 begin->bbox.moveBy(offset-begin->x,0);
 832                                 begin->x=offset;
 833                                 offset+=begin->w;
 834                                 ++begin;
 835                         }
 836                         break;
 837                 }
 838                 case dirBlock:
 839                 {
 840                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
 841                                 continue;
 842                         int spacemode;
 843                         if (numspaces)
 844                                 spacemode=1;
 845                         else
 846                                 spacemode=0;
 847                         if ((!spacemode) && (num<2))
 848                                 break;
 849                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
 850                         int curoff=0;
 851                         while (begin != end)
 852                         {
 853                                 int doadd=0;
 854                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
 855                                         doadd=1;
 856                                 begin->x+=curoff>>8;
 857                                 begin->bbox.moveBy(curoff>>8,0);
 858                                 if (doadd)
 859                                         curoff+=off;
 860                                 ++begin;
 861                         }
 862                         break;
 863                 }
 864                 }
 865         }
 866         bboxValid=false;
 867         calc_bbox();
 868 }
 869
 870 void eTextPara::clear()
 871 {
 872         singleLock s(ftlock);
 873
 874         current_font = 0;
 875         replacement_font = 0;
 876
 877         glyphs.clear();
 878 }
 879
 880 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");