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 #include <byteswap.h>
  10
  11 #ifndef BYTE_ORDER
  12 #error "no BYTE_ORDER defined!"
  13 #endif
  14
  15 // use this for init Freetype...
  16 #include <ft2build.h>
  17 #include FT_FREETYPE_H
  18 #ifdef HAVE_FREETYPE2
  19 #define FTC_Image_Cache_New(a,b)        FTC_ImageCache_New(a,b)
  20 #define FTC_Image_Cache_Lookup(a,b,c,d) FTC_ImageCache_Lookup(a,b,c,d,NULL)
  21 #define FTC_SBit_Cache_New(a,b)         FTC_SBitCache_New(a,b)
  22 #define FTC_SBit_Cache_Lookup(a,b,c,d)  FTC_SBitCache_Lookup(a,b,c,d,NULL)
  23 #endif
  24
  25 #include <lib/base/eerror.h>
  26 #include <lib/gdi/lcd.h>
  27 #include <lib/gdi/grc.h>
  28 #include <lib/base/elock.h>
  29 #include <lib/base/init.h>
  30 #include <lib/base/init_num.h>
  31
  32 #define HAVE_FRIBIDI
  33 // until we have it in the cdk
  34
  35 #ifdef HAVE_FRIBIDI
  36 #include <fribidi/fribidi.h>
  37 #endif
  38
  39 #include <map>
  40
  41 fontRenderClass *fontRenderClass::instance;
  42
  43 static pthread_mutex_t ftlock=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
  44
  45 #ifndef HAVE_FREETYPE2
  46 static FTC_Font cache_current_font=0;
  47 #endif
  48
  49 struct fntColorCacheKey
  50 {
  51         gRGB start, end;
  52         fntColorCacheKey(const gRGB &start, const gRGB &end)
  53                 : start(start), end(end)
  54         {
  55         }
  56         bool operator <(const fntColorCacheKey &c) const
  57         {
  58                 if (start < c.start)
  59                         return 1;
  60                 else if (start == c.start)
  61                         return end < c.end;
  62                 return 0;
  63         }
  64 };
  65
  66 std::map<fntColorCacheKey,gLookup> colorcache;
  67
  68 static gLookup &getColor(const gPalette &pal, const gRGB &start, const gRGB &end)
  69 {
  70         fntColorCacheKey key(start, end);
  71         std::map<fntColorCacheKey,gLookup>::iterator i=colorcache.find(key);
  72         if (i != colorcache.end())
  73                 return i->second;
  74         gLookup &n=colorcache.insert(std::pair<fntColorCacheKey,gLookup>(key,gLookup())).first->second;
  75 //      eDebug("[FONT] creating new font color cache entry %02x%02x%02x%02x .. %02x%02x%02x%02x", start.a, start.r, start.g, start.b,
  76 //              end.a, end.r, end.g, end.b);
  77         n.build(16, pal, start, end);
  78 //      for (int i=0; i<16; i++)
  79 //              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);
  80 //      eDebug("");
  81         return n;
  82 }
  83
  84 fontRenderClass *fontRenderClass::getInstance()
  85 {
  86         return instance;
  87 }
  88
  89 FT_Error myFTC_Face_Requester(FTC_FaceID        face_id,
  90                                                                                                                         FT_Library      library,
  91                                                                                                                         FT_Pointer      request_data,
  92                                                                                                                         FT_Face*                aface)
  93 {
  94         return ((fontRenderClass*)request_data)->FTC_Face_Requester(face_id, aface);
  95 }
  96
  97
  98 FT_Error fontRenderClass::FTC_Face_Requester(FTC_FaceID face_id, FT_Face* aface)
  99 {
 100         fontListEntry *font=(fontListEntry *)face_id;
 101         if (!font)
 102                 return -1;
 103
 104 //      eDebug("[FONT] FTC_Face_Requester (%s)", font->face.c_str());
 105
 106         int error;
 107         if ((error=FT_New_Face(library, font->filename.c_str(), 0, aface)))
 108         {
 109                 eDebug(" failed: %s", strerror(error));
 110                 return error;
 111         }
 112         FT_Select_Charmap(*aface, ft_encoding_unicode);
 113         return 0;
 114 }
 115
 116 FTC_FaceID fontRenderClass::getFaceID(const std::string &face)
 117 {
 118         for (fontListEntry *f=font; f; f=f->next)
 119         {
 120                 if (f->face == face)
 121                         return (FTC_FaceID)f;
 122         }
 123         return 0;
 124 }
 125
 126 FT_Error fontRenderClass::getGlyphBitmap(FTC_Image_Desc *font, FT_ULong glyph_index, FTC_SBit *sbit)
 127 {
 128         FT_Error res=FTC_SBit_Cache_Lookup(sbitsCache, font, glyph_index, sbit);
 129         return res;
 130 }
 131
 132 std::string fontRenderClass::AddFont(const std::string &filename, const std::string &name, int scale)
 133 {
 134         eDebugNoNewLine("[FONT] adding font %s...", filename.c_str());
 135         fflush(stdout);
 136         int error;
 137         fontListEntry *n=new fontListEntry;
 138
 139         n->scale=scale;
 140         FT_Face face;
 141         singleLock s(ftlock);
 142
 143         if ((error=FT_New_Face(library, filename.c_str(), 0, &face)))
 144                 eFatal(" failed: %s", strerror(error));
 145
 146         n->filename=filename;
 147         n->face=name;
 148         FT_Done_Face(face);
 149
 150         n->next=font;
 151         eDebug("OK (%s)", n->face.c_str());
 152         font=n;
 153
 154         return n->face;
 155 }
 156
 157 fontRenderClass::fontListEntry::~fontListEntry()
 158 {
 159 }
 160
 161 fontRenderClass::fontRenderClass(): fb(fbClass::getInstance())
 162 {
 163         instance=this;
 164         eDebug("[FONT] initializing lib...");
 165         {
 166                 if (FT_Init_FreeType(&library))
 167                 {
 168                         eDebug("[FONT] initializing failed.");
 169                         return;
 170                 }
 171         }
 172         eDebug("[FONT] loading fonts...");
 173         fflush(stdout);
 174         font=0;
 175
 176         int maxbytes=4*1024*1024;
 177         eDebug("[FONT] Intializing font cache, using max. %dMB...", maxbytes/1024/1024);
 178         fflush(stdout);
 179         {
 180                 if (FTC_Manager_New(library, 8, 8, maxbytes, myFTC_Face_Requester, this, &cacheManager))
 181                 {
 182                         eDebug("[FONT] initializing font cache failed!");
 183                         return;
 184                 }
 185                 if (!cacheManager)
 186                 {
 187                         eDebug("[FONT] initializing font cache manager error.");
 188                         return;
 189                 }
 190                 if (FTC_SBit_Cache_New(cacheManager, &sbitsCache))
 191                 {
 192                         eDebug("[FONT] initializing font cache sbit failed!");
 193                         return;
 194                 }
 195                 if (FTC_Image_Cache_New(cacheManager, &imageCache))
 196                 {
 197                         eDebug("[FONT] initializing font cache imagecache failed!");
 198                 }
 199         }
 200         return;
 201 }
 202
 203 float fontRenderClass::getLineHeight(const gFont& font)
 204 {
 205         if (!instance)
 206                 return 0;
 207         ePtr<Font> fnt;
 208         getFont(fnt, font.family.c_str(), font.pointSize);
 209         if (!fnt)
 210                 return 0;
 211         singleLock s(ftlock);
 212         FT_Face current_face;
 213 #ifdef HAVE_FREETYPE2
 214         if ((FTC_Manager_LookupFace(cacheManager, fnt->scaler.face_id, &current_face) < 0) ||
 215             (FTC_Manager_LookupSize(cacheManager, &fnt->scaler, &fnt->size) < 0))
 216 #else
 217         if (FTC_Manager_Lookup_Size(cacheManager, &fnt->font.font, &current_face, &fnt->size)<0)
 218 #endif
 219         {
 220                 eDebug("FTC_Manager_Lookup_Size failed!");
 221                 return 0;
 222         }
 223         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 224         float height=(current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)/64.0;
 225         return height;
 226 }
 227
 228 fontRenderClass::~fontRenderClass()
 229 {
 230         singleLock s(ftlock);
 231         while(font)
 232         {
 233                 fontListEntry *f=font;
 234                 font=font->next;
 235                 delete f;
 236         }
 237 //      auskommentiert weil freetype und enigma die kritische masse des suckens ueberschreiten.
 238 //      FTC_Manager_Done(cacheManager);
 239 //      FT_Done_FreeType(library);
 240 }
 241
 242 int fontRenderClass::getFont(ePtr<Font> &font, const std::string &face, int size, int tabwidth)
 243 {
 244         FTC_FaceID id=getFaceID(face);
 245         if (!id)
 246         {
 247                 font = 0;
 248                 return -1;
 249         }
 250         font = new Font(this, id, size * ((fontListEntry*)id)->scale / 100, tabwidth);
 251         return 0;
 252 }
 253
 254 void addFont(const char *filename, const char *alias, int scale_factor, int is_replacement)
 255 {
 256         fontRenderClass::getInstance()->AddFont(filename, alias, scale_factor);
 257         if (is_replacement)
 258                 eTextPara::setReplacementFont(alias);
 259 }
 260
 261 DEFINE_REF(Font);
 262
 263 Font::Font(fontRenderClass *render, FTC_FaceID faceid, int isize, int tw): tabwidth(tw)
 264 {
 265         renderer=render;
 266 #ifdef HAVE_FREETYPE2
 267         font.face_id = faceid;
 268         font.width = isize;
 269         font.height = isize;
 270         font.flags = FT_LOAD_DEFAULT;
 271         scaler.face_id = faceid;
 272         scaler.width = isize;
 273         scaler.height = isize;
 274         scaler.pixel = 1;
 275 #else
 276         font.font.face_id=faceid;
 277         font.font.pix_width     = isize;
 278         font.font.pix_height = isize;
 279         font.image_type = ftc_image_grays;
 280 #endif
 281         height=isize;
 282         if (tabwidth==-1)
 283                 tabwidth=8*isize;
 284 //      font.image_type |= ftc_image_flag_autohinted;
 285 }
 286
 287 FT_Error Font::getGlyphBitmap(FT_ULong glyph_index, FTC_SBit *sbit)
 288 {
 289         return renderer->getGlyphBitmap(&font, glyph_index, sbit);
 290 }
 291
 292 Font::~Font()
 293 {
 294 }
 295
 296 DEFINE_REF(eTextPara);
 297
 298 int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt glyphIndex, int flags, int rflags)
 299 {
 300         FTC_SBit glyph;
 301         if (current_font->getGlyphBitmap(glyphIndex, &glyph))
 302                 return 1;
 303
 304         int nx=cursor.x();
 305
 306         nx+=glyph->xadvance;
 307
 308         if (
 309                         (rflags&RS_WRAP) &&
 310                         (nx >= area.right())
 311                 )
 312         {
 313                 int cnt = 0;
 314                 glyphString::reverse_iterator i(glyphs.rbegin());
 315                         /* find first possibility (from end to begin) to break */
 316                 while (i != glyphs.rend())
 317                 {
 318                         if (i->flags&(GS_CANBREAK|GS_ISFIRST)) /* stop on either space/hyphen/shy or start of line (giving up) */
 319                                 break;
 320                         cnt++;
 321                         ++i;
 322                 }
 323
 324                         /* if ... */
 325                 if (i != glyphs.rend()  /* ... we found anything */
 326                         && (i->flags&GS_CANBREAK) /* ...and this is a space/hyphen/soft-hyphen */
 327                         && (!(i->flags & GS_ISFIRST)) /* ...and this is not an start of line (line with just a single space/hyphen) */
 328                         && cnt ) /* ... and there are actual non-space characters after this */
 329                 {
 330                                 /* if we have a soft-hyphen, and used that for breaking, turn it into a real hyphen */
 331                         if (i->flags & GS_SOFTHYPHEN)
 332                         {
 333                                 i->flags &= ~GS_SOFTHYPHEN;
 334                                 i->flags |= GS_HYPHEN;
 335                         }
 336                         --i; /* skip the space/hypen/softhyphen */
 337                         int linelength=cursor.x()-i->x;
 338                         i->flags|=GS_ISFIRST; /* make this a line start */
 339                         ePoint offset=ePoint(i->x, i->y);
 340                         newLine(rflags);
 341                         offset-=cursor;
 342
 343                                 /* and move everything to the end into the next line. */
 344                         do
 345                         {
 346                                 i->x-=offset.x();
 347                                 i->y-=offset.y();
 348                                 i->bbox.moveBy(-offset.x(), -offset.y());
 349                                 --lineChars.back();
 350                                 ++charCount;
 351                         } while (i-- != glyphs.rbegin()); // rearrange them into the next line
 352                         cursor+=ePoint(linelength, 0);  // put the cursor after that line
 353                 } else
 354                 {
 355                         if (cnt)
 356                         {
 357                                 newLine(rflags);
 358                                 flags|=GS_ISFIRST;
 359                         }
 360                 }
 361         }
 362
 363         int xadvance=glyph->xadvance, kern=0;
 364
 365         if (previous && use_kerning)
 366         {
 367                 FT_Vector delta;
 368                 FT_Get_Kerning(current_face, previous, glyphIndex, ft_kerning_default, &delta);
 369                 kern=delta.x>>6;
 370         }
 371
 372         pGlyph ng;
 373         ng.bbox.setLeft( ((flags&GS_ISFIRST)|(cursor.x()-1))+glyph->left );
 374         ng.bbox.setTop( cursor.y() - glyph->top );
 375         ng.bbox.setWidth( glyph->width );
 376         ng.bbox.setHeight( glyph->height );
 377
 378         xadvance += kern;
 379         ng.bbox.setWidth(xadvance);
 380
 381         ng.x = cursor.x()+kern;
 382         ng.y = cursor.y();
 383         ng.w = xadvance;
 384         ng.font = current_font;
 385         ng.glyph_index = glyphIndex;
 386         ng.flags = flags;
 387         glyphs.push_back(ng);
 388         ++charCount;
 389
 390                 /* when we have a SHY, don't xadvance. It will either be the last in the line (when used for breaking), or not displayed. */
 391         if (!(flags & GS_SOFTHYPHEN))
 392                 cursor += ePoint(xadvance, 0);
 393         previous = glyphIndex;
 394         return 0;
 395 }
 396
 397 void eTextPara::calc_bbox()
 398 {
 399         if (!glyphs.size())
 400         {
 401                 bboxValid = 0;
 402                 boundBox = eRect();
 403                 return;
 404         }
 405
 406         bboxValid = 1;
 407
 408         glyphString::iterator i(glyphs.begin());
 409
 410         boundBox = i->bbox;
 411         ++i;
 412
 413         for (; i != glyphs.end(); ++i)
 414         {
 415                 if (i->flags & (GS_ISSPACE|GS_SOFTHYPHEN))
 416                         continue;
 417                 if ( i->bbox.left() < boundBox.left() )
 418                         boundBox.setLeft( i->bbox.left() );
 419                 if ( i->bbox.top() < boundBox.top() )
 420                         boundBox.setTop( i->bbox.top() );
 421                 if ( i->bbox.right() > boundBox.right() )
 422                         boundBox.setRight( i->bbox.right() );
 423                 if ( i->bbox.bottom() > boundBox.bottom() )
 424                         boundBox.setBottom( i->bbox.bottom() );
 425         }
 426 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
 427 }
 428
 429 void eTextPara::newLine(int flags)
 430 {
 431         if (maximum.width()<cursor.x())
 432                 maximum.setWidth(cursor.x());
 433         cursor.setX(left);
 434         previous=0;
 435         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 436
 437         lineOffsets.push_back(cursor.y());
 438         lineChars.push_back(charCount);
 439         charCount=0;
 440
 441         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)>>6);
 442
 443         if (maximum.height()<cursor.y())
 444                 maximum.setHeight(cursor.y());
 445         previous=0;
 446 }
 447
 448 eTextPara::~eTextPara()
 449 {
 450         clear();
 451 }
 452
 453 void eTextPara::setFont(const gFont *font)
 454 {
 455         ePtr<Font> fnt, replacement;
 456         fontRenderClass::getInstance()->getFont(fnt, font->family.c_str(), font->pointSize);
 457         if (!fnt)
 458                 eWarning("FONT '%s' MISSING!", font->family.c_str());
 459         fontRenderClass::getInstance()->getFont(replacement, replacement_facename.c_str(), font->pointSize);
 460         setFont(fnt, replacement);
 461 }
 462
 463 std::string eTextPara::replacement_facename;
 464 std::set<int> eTextPara::forced_replaces;
 465
 466 void eTextPara::setFont(Font *fnt, Font *replacement)
 467 {
 468         if (!fnt)
 469                 return;
 470         current_font=fnt;
 471         replacement_font=replacement;
 472         singleLock s(ftlock);
 473
 474                         // we ask for replacment_font first becauseof the cache
 475         if (replacement_font)
 476         {
 477 #ifdef HAVE_FREETYPE2
 478                 if ((FTC_Manager_LookupFace(fontRenderClass::instance->cacheManager,
 479                                             replacement_font->scaler.face_id,
 480                                             &replacement_face) < 0) ||
 481                     (FTC_Manager_LookupSize(fontRenderClass::instance->cacheManager,
 482                                             &replacement_font->scaler,
 483                                             &replacement_font->size) < 0))
 484 #else
 485                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager,
 486                                 &replacement_font->font.font, &replacement_face,
 487                                 &replacement_font->size)<0)
 488 #endif
 489                 {
 490                         eDebug("FTC_Manager_Lookup_Size failed!");
 491                         return;
 492                 }
 493         }
 494         if (current_font)
 495         {
 496 #ifdef HAVE_FREETYPE2
 497                 if ((FTC_Manager_LookupFace(fontRenderClass::instance->cacheManager,
 498                                             current_font->scaler.face_id,
 499                                             &current_face) < 0) ||
 500                     (FTC_Manager_LookupSize(fontRenderClass::instance->cacheManager,
 501                                             &current_font->scaler,
 502                                             &current_font->size) < 0))
 503 #else
 504                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 505 #endif
 506                 {
 507                         eDebug("FTC_Manager_Lookup_Size failed!");
 508                         return;
 509                 }
 510         }
 511 #ifndef HAVE_FREETYPE2
 512         cache_current_font=&current_font->font.font;
 513 #endif
 514         previous=0;
 515         use_kerning=FT_HAS_KERNING(current_face);
 516 }
 517
 518 void
 519 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
 520
 521 int eTextPara::renderString(const char *string, int rflags)
 522 {
 523         singleLock s(ftlock);
 524
 525         if (!current_font)
 526                 return -1;
 527
 528 #ifdef HAVE_FREETYPE2
 529         if ((FTC_Manager_LookupFace(fontRenderClass::instance->cacheManager,
 530                                     current_font->scaler.face_id,
 531                                     &current_face) < 0) ||
 532             (FTC_Manager_LookupSize(fontRenderClass::instance->cacheManager,
 533                                     &current_font->scaler,
 534                                     &current_font->size) < 0))
 535         {
 536                 eDebug("FTC_Manager_Lookup_Size failed!");
 537                 return -1;
 538         }
 539 #else
 540         if (&current_font->font.font != cache_current_font)
 541         {
 542                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 543                 {
 544                         eDebug("FTC_Manager_Lookup_Size failed!");
 545                         return -1;
 546                 }
 547                 cache_current_font=&current_font->font.font;
 548         }
 549 #endif
 550
 551         if (!current_face)
 552                 eFatal("eTextPara::renderString: no current_face");
 553         if (!current_face->size)
 554                 eFatal("eTextPara::renderString: no current_face->size");
 555
 556         if (cursor.y()==-1)
 557         {
 558                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
 559                 left=cursor.x();
 560         }
 561
 562         std::vector<unsigned long> uc_string, uc_visual;
 563         if (string)
 564                 uc_string.reserve(strlen(string));
 565
 566         const char *p = string ? string : "";
 567
 568         while (*p)
 569         {
 570                 unsigned int unicode=(unsigned char)*p++;
 571
 572                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
 573                 {
 574                         if ((unicode & 0xE0)==0xC0) // two bytes
 575                         {
 576                                 unicode&=0x1F;
 577                                 unicode<<=6;
 578                                 if (*p)
 579                                         unicode|=(*p++)&0x3F;
 580                         } else if ((unicode & 0xF0)==0xE0) // three bytes
 581                         {
 582                                 unicode&=0x0F;
 583                                 unicode<<=6;
 584                                 if (*p)
 585                                         unicode|=(*p++)&0x3F;
 586                                 unicode<<=6;
 587                                 if (*p)
 588                                         unicode|=(*p++)&0x3F;
 589                         } else if ((unicode & 0xF8)==0xF0) // four bytes
 590                         {
 591                                 unicode&=0x07;
 592                                 unicode<<=6;
 593                                 if (*p)
 594                                         unicode|=(*p++)&0x3F;
 595                                 unicode<<=6;
 596                                 if (*p)
 597                                         unicode|=(*p++)&0x3F;
 598                                 unicode<<=6;
 599                                 if (*p)
 600                                         unicode|=(*p++)&0x3F;
 601                         }
 602                 }
 603                 uc_string.push_back(unicode);
 604         }
 605
 606         std::vector<unsigned long> uc_shape;
 607
 608                 // character -> glyph conversion
 609         shape(uc_shape, uc_string);
 610
 611                 // now do the usual logical->visual reordering
 612         int size=uc_shape.size();
 613 #ifdef HAVE_FRIBIDI
 614         FriBidiCharType dir=FRIBIDI_TYPE_ON;
 615         uc_visual.resize(size);
 616         // gaaanz lahm, aber anders geht das leider nicht, sorry.
 617         FriBidiChar array[size], target[size];
 618         std::copy(uc_shape.begin(), uc_shape.end(), array);
 619         fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
 620         uc_visual.assign(target, target+size);
 621 #else
 622         uc_visual=uc_shape;
 623 #endif
 624
 625         glyphs.reserve(size);
 626
 627         int nextflags = 0;
 628
 629         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
 630                 i != uc_visual.end(); ++i)
 631         {
 632                 int isprintable=1;
 633                 int flags = nextflags;
 634                 nextflags = 0;
 635                 unsigned long chr = *i;
 636
 637                 if (!(rflags&RS_DIRECT))
 638                 {
 639                         switch (chr)
 640                         {
 641                         case '\\':
 642                         {
 643                                 unsigned long c = *(i+1);
 644                                 switch (c)
 645                                 {
 646                                         case 'n':
 647                                                 i++;
 648                                                 goto newline;
 649                                         case 't':
 650                                                 i++;
 651                                                 goto tab;
 652                                         case 'r':
 653                                                 i++;
 654                                                 goto nprint;
 655                                         default:
 656                                         ;
 657                                 }
 658                                 break;
 659                         }
 660                         case '\t':
 661 tab:            isprintable=0;
 662                                 cursor+=ePoint(current_font->tabwidth, 0);
 663                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
 664                                 break;
 665                         case 0x8A:
 666                         case 0xE08A:
 667                         case '\n':
 668 newline:isprintable=0;
 669                                 newLine(rflags);
 670                                 nextflags|=GS_ISFIRST;
 671                                 break;
 672                         case '\r':
 673                         case 0x86: case 0xE086:
 674                         case 0x87: case 0xE087:
 675 nprint: isprintable=0;
 676                                 break;
 677                         case 0xAD: // soft-hyphen
 678                                 flags |= GS_SOFTHYPHEN;
 679                                 chr = 0x2010; /* hyphen */
 680                                 break;
 681                         case 0x2010:
 682                         case '-':
 683                                 flags |= GS_HYPHEN;
 684                                 break;
 685                         case ' ':
 686                                 flags|=GS_ISSPACE;
 687                         default:
 688                                 break;
 689                         }
 690                 }
 691                 if (isprintable)
 692                 {
 693                         FT_UInt index = 0;
 694
 695                                 /* FIXME: our font doesn't seem to have a hyphen, so use hyphen-minus for it. */
 696                         if (chr == 0x2010)
 697                                 chr = '-';
 698
 699                         if (forced_replaces.find(chr) == forced_replaces.end())
 700                                 index=(rflags&RS_DIRECT)? chr : FT_Get_Char_Index(current_face, chr);
 701
 702                         if (!index)
 703                         {
 704                                 if (replacement_face)
 705                                         index=(rflags&RS_DIRECT)? chr : FT_Get_Char_Index(replacement_face, chr);
 706
 707                                 if (!index)
 708                                         eDebug("unicode U+%4lx not present", chr);
 709                                 else
 710                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
 711                         } else
 712                                 appendGlyph(current_font, current_face, index, flags, rflags);
 713                 }
 714         }
 715         bboxValid=false;
 716         calc_bbox();
 717 #ifdef HAVE_FRIBIDI
 718         if (dir & FRIBIDI_MASK_RTL)
 719         {
 720                 realign(dirRight);
 721                 doTopBottomReordering=true;
 722         }
 723 #endif
 724
 725         if (charCount)
 726         {
 727                 lineOffsets.push_back(cursor.y());
 728                 lineChars.push_back(charCount);
 729                 charCount=0;
 730         }
 731
 732         return 0;
 733 }
 734
 735 void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
 736 {
 737         singleLock s(ftlock);
 738
 739         if (!current_font)
 740                 return;
 741
 742 #ifdef HAVE_FREETYPE2
 743         if ((FTC_Manager_LookupFace(fontRenderClass::instance->cacheManager,
 744                                     current_font->scaler.face_id,
 745                                     &current_face) < 0) ||
 746             (FTC_Manager_LookupSize(fontRenderClass::instance->cacheManager,
 747                                     &current_font->scaler,
 748                                     &current_font->size) < 0))
 749         {
 750                 eDebug("FTC_Manager_Lookup_Size failed!");
 751                 return;
 752         }
 753 #else
 754         if (&current_font->font.font != cache_current_font)
 755         {
 756                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 757                 {
 758                         eDebug("FTC_Manager_Lookup_Size failed!");
 759                         return;
 760                 }
 761                 cache_current_font=&current_font->font.font;
 762         }
 763 #endif
 764
 765         ePtr<gPixmap> target;
 766         dc.getPixmap(target);
 767         gSurface *surface = target->surface;
 768
 769         register int opcode;
 770
 771         gColor *lookup8, lookup8_invert[16];
 772         gColor *lookup8_normal=0;
 773
 774         __u16 lookup16_normal[16], lookup16_invert[16], *lookup16;
 775         __u32 lookup32_normal[16], lookup32_invert[16], *lookup32;
 776
 777         if (surface->bpp == 8)
 778         {
 779                 if (surface->clut.data)
 780                 {
 781                         lookup8_normal=getColor(surface->clut, background, foreground).lookup;
 782
 783                         int i;
 784                         for (i=0; i<16; ++i)
 785                                 lookup8_invert[i] = lookup8_normal[i^0xF];
 786
 787                         opcode=0;
 788                 } else
 789                         opcode=1;
 790         } else if (surface->bpp == 16)
 791         {
 792                 opcode=2;
 793                 for (int i=0; i<16; ++i)
 794                 {
 795 #define BLEND(y, x, a) (y + (((x-y) * a)>>8))
 796                         unsigned char da = background.a, dr = background.r, dg = background.g, db = background.b;
 797                         int sa = i * 16;
 798                         if (sa < 256)
 799                         {
 800                                 dr = BLEND(background.r, foreground.r, sa) & 0xFF;
 801                                 dg = BLEND(background.g, foreground.g, sa) & 0xFF;
 802                                 db = BLEND(background.b, foreground.b, sa) & 0xFF;
 803                         }
 804 #undef BLEND
 805 #if BYTE_ORDER == LITTLE_ENDIAN
 806                         lookup16_normal[i] = bswap_16(((db >> 3) << 11) | ((dg >> 2) << 5) | (dr >> 3));
 807 #else
 808                         lookup16_normal[i] = ((db >> 3) << 11) | ((dg >> 2) << 5) | (dr >> 3);
 809 #endif
 810                         da ^= 0xFF;
 811                 }
 812                 for (int i=0; i<16; ++i)
 813                         lookup16_invert[i]=lookup16_normal[i^0xF];
 814         } else if (surface->bpp == 32)
 815         {
 816                 opcode=3;
 817                 for (int i=0; i<16; ++i)
 818                 {
 819 #define BLEND(y, x, a) (y + (((x-y) * a)>>8))
 820
 821                         unsigned char da = background.a, dr = background.r, dg = background.g, db = background.b;
 822                         int sa = i * 16;
 823                         if (sa < 256)
 824                         {
 825                                 da = BLEND(background.a, foreground.a, sa) & 0xFF;
 826                                 dr = BLEND(background.r, foreground.r, sa) & 0xFF;
 827                                 dg = BLEND(background.g, foreground.g, sa) & 0xFF;
 828                                 db = BLEND(background.b, foreground.b, sa) & 0xFF;
 829                         }
 830 #undef BLEND
 831                         da ^= 0xFF;
 832                         lookup32_normal[i]=db | (dg << 8) | (dr << 16) | (da << 24);;
 833                 }
 834                 for (int i=0; i<16; ++i)
 835                         lookup32_invert[i]=lookup32_normal[i^0xF];
 836         } else
 837         {
 838                 eWarning("can't render to %dbpp", surface->bpp);
 839                 return;
 840         }
 841
 842         gRegion area(eRect(0, 0, surface->x, surface->y));
 843         gRegion clip = dc.getClip() & area;
 844
 845         int buffer_stride=surface->stride;
 846
 847         for (unsigned int c = 0; c < clip.rects.size(); ++c)
 848         {
 849                 std::list<int>::reverse_iterator line_offs_it(lineOffsets.rbegin());
 850                 std::list<int>::iterator line_chars_it(lineChars.begin());
 851                 int line_offs=0;
 852                 int line_chars=0;
 853                 for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i, --line_chars)
 854                 {
 855                         while(!line_chars)
 856                         {
 857                                 line_offs = *(line_offs_it++);
 858                                 line_chars = *(line_chars_it++);
 859                         }
 860
 861                         if (i->flags & GS_SOFTHYPHEN)
 862                                 continue;
 863
 864                         if (!(i->flags & GS_INVERT))
 865                         {
 866                                 lookup8 = lookup8_normal;
 867                                 lookup16 = lookup16_normal;
 868                                 lookup32 = lookup32_normal;
 869                         } else
 870                         {
 871                                 lookup8 = lookup8_invert;
 872                                 lookup16 = lookup16_invert;
 873                                 lookup32 = lookup32_invert;
 874                         }
 875
 876                         static FTC_SBit glyph_bitmap;
 877                         if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
 878                                 continue;
 879                         int rx=i->x+glyph_bitmap->left + offset.x();
 880                         int ry=(doTopBottomReordering ? line_offs : i->y) - glyph_bitmap->top + offset.y();
 881
 882                         __u8 *d=(__u8*)(surface->data)+buffer_stride*ry+rx*surface->bypp;
 883                         __u8 *s=glyph_bitmap->buffer;
 884                         register int sx=glyph_bitmap->width;
 885                         int sy=glyph_bitmap->height;
 886                         if ((sy+ry) >= clip.rects[c].bottom())
 887                                 sy=clip.rects[c].bottom()-ry;
 888                         if ((sx+rx) >= clip.rects[c].right())
 889                                 sx=clip.rects[c].right()-rx;
 890                         if (rx < clip.rects[c].left())
 891                         {
 892                                 int diff=clip.rects[c].left()-rx;
 893                                 s+=diff;
 894                                 sx-=diff;
 895                                 rx+=diff;
 896                                 d+=diff*surface->bypp;
 897                         }
 898                         if (ry < clip.rects[c].top())
 899                         {
 900                                 int diff=clip.rects[c].top()-ry;
 901                                 s+=diff*glyph_bitmap->pitch;
 902                                 sy-=diff;
 903                                 ry+=diff;
 904                                 d+=diff*buffer_stride;
 905                         }
 906                         if (sx>0)
 907                         {
 908                                 switch(opcode) {
 909                                 case 0: // 4bit lookup to 8bit
 910                                         for (int ay=0; ay<sy; ay++)
 911                                         {
 912                                                 register __u8 *td=d;
 913                                                 register int ax;
 914                                                 for (ax=0; ax<sx; ax++)
 915                                                 {
 916                                                         register int b=(*s++)>>4;
 917                                                         if(b)
 918                                                                 *td++=lookup8[b];
 919                                                         else
 920                                                                 td++;
 921                                                 }
 922                                                 s+=glyph_bitmap->pitch-sx;
 923                                                 d+=buffer_stride;
 924                                         }
 925                                         break;
 926                                 case 1: // 8bit direct
 927                                         for (int ay=0; ay<sy; ay++)
 928                                         {
 929                                                 register __u8 *td=d;
 930                                                 register int ax;
 931                                                 for (ax=0; ax<sx; ax++)
 932                                                 {
 933                                                         register int b=*s++;
 934                                                         *td++^=b;
 935                                                 }
 936                                                 s+=glyph_bitmap->pitch-sx;
 937                                                 d+=buffer_stride;
 938                                         }
 939                                         break;
 940                                 case 2: // 16bit
 941                                         for (int ay=0; ay<sy; ay++)
 942                                         {
 943                                                 register __u16 *td=(__u16*)d;
 944                                                 register int ax;
 945                                                 for (ax=0; ax<sx; ax++)
 946                                                 {
 947                                                         register int b=(*s++)>>4;
 948                                                         if(b)
 949                                                                 *td++=lookup16[b];
 950                                                         else
 951                                                                 td++;
 952                                                 }
 953                                                 s+=glyph_bitmap->pitch-sx;
 954                                                 d+=buffer_stride;
 955                                         }
 956                                         break;
 957                                 case 3: // 32bit
 958                                         for (int ay=0; ay<sy; ay++)
 959                                         {
 960                                                 register __u32 *td=(__u32*)d;
 961                                                 register int ax;
 962                                                 for (ax=0; ax<sx; ax++)
 963                                                 {
 964                                                         register int b=(*s++)>>4;
 965                                                         if(b)
 966                                                                 *td++=lookup32[b];
 967                                                         else
 968                                                                 td++;
 969                                                 }
 970                                                 s+=glyph_bitmap->pitch-sx;
 971                                                 d+=buffer_stride;
 972                                         }
 973                                 default:
 974                                         break;
 975                                 }
 976                         }
 977                 }
 978         }
 979 }
 980
 981 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
 982 {
 983         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
 984         if (dir==dirLeft)
 985                 return;
 986         while (c != glyphs.end())
 987         {
 988                 int linelength=0;
 989                 int numspaces=0, num=0;
 990                 begin=end;
 991
 992                 ASSERT( end != glyphs.end());
 993
 994                         // zeilenende suchen
 995                 do {
 996                         last=end;
 997                         ++end;
 998                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
 999                         // end zeigt jetzt auf begin der naechsten zeile
1000
1001                 for (c=begin; c!=end; ++c)
1002                 {
1003                                 // space am zeilenende skippen
1004                         if ((c==last) && (c->flags&GS_ISSPACE))
1005                                 continue;
1006
1007                         if (c->flags&GS_ISSPACE)
1008                                 numspaces++;
1009                         linelength+=c->w;
1010                         num++;
1011                 }
1012
1013                 switch (dir)
1014                 {
1015                 case dirRight:
1016                 case dirCenter:
1017                 {
1018                         int offset=area.width()-linelength;
1019                         if (dir==dirCenter)
1020                                 offset/=2;
1021                         offset+=area.left();
1022                         while (begin != end)
1023                         {
1024                                 begin->bbox.moveBy(offset-begin->x,0);
1025                                 begin->x=offset;
1026                                 offset+=begin->w;
1027                                 ++begin;
1028                         }
1029                         break;
1030                 }
1031                 case dirBlock:
1032                 {
1033                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
1034                                 continue;
1035                         int spacemode;
1036                         if (numspaces)
1037                                 spacemode=1;
1038                         else
1039                                 spacemode=0;
1040                         if ((!spacemode) && (num<2))
1041                                 break;
1042                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
1043                         int curoff=0;
1044                         while (begin != end)
1045                         {
1046                                 int doadd=0;
1047                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
1048                                         doadd=1;
1049                                 begin->x+=curoff>>8;
1050                                 begin->bbox.moveBy(curoff>>8,0);
1051                                 if (doadd)
1052                                         curoff+=off;
1053                                 ++begin;
1054                         }
1055                         break;
1056                 }
1057                 }
1058         }
1059         bboxValid=false;
1060         calc_bbox();
1061 }
1062
1063 void eTextPara::clear()
1064 {
1065         singleLock s(ftlock);
1066
1067         current_font = 0;
1068         replacement_font = 0;
1069
1070         glyphs.clear();
1071 }
1072
1073 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");