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