code.vuplus.com Git - vuplus_dvbapp/blob - lib/gdi/font.cpp

   1 #include <lib/gdi/font.h>
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <ctype.h>
   6 #include <pthread.h>
   7 #include <sys/types.h>
   8 #include <unistd.h>
   9
  10 // use this for init Freetype...
  11 #include <ft2build.h>
  12 #include FT_FREETYPE_H
  13
  14 #include <lib/base/eerror.h>
  15 #include <lib/gdi/lcd.h>
  16 #include <lib/gdi/grc.h>
  17 #include <lib/base/elock.h>
  18 #include <lib/base/init.h>
  19 #include <lib/base/init_num.h>
  20
  21 //#define HAVE_FRIBIDI
  22 // until we have it in the cdk
  23
  24 #ifdef HAVE_FRIBIDI
  25 #include <fribidi/fribidi.h>
  26 #endif
  27
  28 #include <map>
  29
  30 fontRenderClass *fontRenderClass::instance;
  31
  32 static pthread_mutex_t ftlock=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
  33 static pthread_mutex_t refcntlck=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
  34
  35 static FTC_Font cache_current_font=0;
  36
  37 struct fntColorCacheKey
  38 {
  39         gRGB start, end;
  40         fntColorCacheKey(const gRGB &start, const gRGB &end)
  41                 : start(start), end(end)
  42         {
  43         }
  44         bool operator <(const fntColorCacheKey &c) const
  45         {
  46                 if (start < c.start)
  47                         return 1;
  48                 else if (start == c.start)
  49                         return end < c.end;
  50                 return 0;
  51         }
  52 };
  53
  54 std::map<fntColorCacheKey,gLookup> colorcache;
  55
  56 static gLookup &getColor(const gPalette &pal, const gRGB &start, const gRGB &end)
  57 {
  58         fntColorCacheKey key(start, end);
  59         std::map<fntColorCacheKey,gLookup>::iterator i=colorcache.find(key);
  60         if (i != colorcache.end())
  61                 return i->second;
  62         gLookup &n=colorcache.insert(std::pair<fntColorCacheKey,gLookup>(key,gLookup())).first->second;
  63         eDebug("[FONT] creating new font color cache entry %02x%02x%02x%02x .. %02x%02x%02x%02x", start.a, start.r, start.g, start.b,
  64                 end.a, end.r, end.g, end.b);
  65         n.build(16, pal, start, end);
  66 /*      for (int i=0; i<16; i++)
  67                 eDebugNoNewLine("%02x|%02x%02x%02x%02x ", (int)n.lookup[i], pal.data[n.lookup[i]].a, pal.data[n.lookup[i]].r, pal.data[n.lookup[i]].g, pal.data[n.lookup[i]].b);
  68         eDebug("");*/
  69         return n;
  70 }
  71
  72 fontRenderClass *fontRenderClass::getInstance()
  73 {
  74         return instance;
  75 }
  76
  77 FT_Error myFTC_Face_Requester(FTC_FaceID        face_id,
  78                                                                                                                         FT_Library      library,
  79                                                                                                                         FT_Pointer      request_data,
  80                                                                                                                         FT_Face*                aface)
  81 {
  82         return ((fontRenderClass*)request_data)->FTC_Face_Requester(face_id, aface);
  83 }
  84
  85
  86 FT_Error fontRenderClass::FTC_Face_Requester(FTC_FaceID face_id, FT_Face* aface)
  87 {
  88         fontListEntry *font=(fontListEntry *)face_id;
  89         if (!font)
  90                 return -1;
  91
  92 //      eDebug("[FONT] FTC_Face_Requester (%s)", font->face.c_str());
  93
  94         int error;
  95         if ((error=FT_New_Face(library, font->filename.c_str(), 0, aface)))
  96         {
  97                 eDebug(" failed: %s", strerror(error));
  98                 return error;
  99         }
 100         FT_Select_Charmap(*aface, ft_encoding_unicode);
 101         return 0;
 102 }
 103
 104 FTC_FaceID fontRenderClass::getFaceID(const eString &face)
 105 {
 106         for (fontListEntry *f=font; f; f=f->next)
 107         {
 108                 if (f->face == face)
 109                         return (FTC_FaceID)f;
 110         }
 111         return 0;
 112 }
 113
 114 FT_Error fontRenderClass::getGlyphBitmap(FTC_Image_Desc *font, FT_ULong glyph_index, FTC_SBit *sbit)
 115 {
 116         FT_Error res=FTC_SBit_Cache_Lookup(sbitsCache, font, glyph_index, sbit);
 117         return res;
 118 }
 119
 120 eString fontRenderClass::AddFont(const eString &filename, const eString &name, int scale)
 121 {
 122         eDebugNoNewLine("[FONT] adding font %s...", filename.c_str());
 123         fflush(stdout);
 124         int error;
 125         fontListEntry *n=new fontListEntry;
 126
 127         n->scale=scale;
 128         FT_Face face;
 129         singleLock s(ftlock);
 130
 131         if ((error=FT_New_Face(library, filename.c_str(), 0, &face)))
 132                 eFatal(" failed: %s", strerror(error));
 133
 134         n->filename=filename;
 135         n->face=name;
 136         FT_Done_Face(face);
 137
 138         n->next=font;
 139         eDebug("OK (%s)", n->face.c_str());
 140         font=n;
 141
 142         return n->face;
 143 }
 144
 145 fontRenderClass::fontListEntry::~fontListEntry()
 146 {
 147 }
 148
 149 fontRenderClass::fontRenderClass(): fb(fbClass::getInstance())
 150 {
 151         instance=this;
 152         eDebug("[FONT] initializing lib...");
 153         {
 154                 if (FT_Init_FreeType(&library))
 155                 {
 156                         eDebug("[FONT] initializing failed.");
 157                         return;
 158                 }
 159         }
 160         eDebug("[FONT] loading fonts...");
 161         fflush(stdout);
 162         font=0;
 163
 164         int maxbytes=4*1024*1024;
 165         eDebug("[FONT] Intializing font cache, using max. %dMB...", maxbytes/1024/1024);
 166         fflush(stdout);
 167         {
 168                 if (FTC_Manager_New(library, 8, 8, maxbytes, myFTC_Face_Requester, this, &cacheManager))
 169                 {
 170                         eDebug("[FONT] initializing font cache failed!");
 171                         return;
 172                 }
 173                 if (!cacheManager)
 174                 {
 175                         eDebug("[FONT] initializing font cache manager error.");
 176                         return;
 177                 }
 178                 if (FTC_SBit_Cache_New(cacheManager, &sbitsCache))
 179                 {
 180                         eDebug("[FONT] initializing font cache sbit failed!");
 181                         return;
 182                 }
 183                 if (FTC_Image_Cache_New(cacheManager, &imageCache))
 184                 {
 185                         eDebug("[FONT] initializing font cache imagecache failed!");
 186                 }
 187         }
 188         return;
 189 }
 190
 191 float fontRenderClass::getLineHeight(const gFont& font)
 192 {
 193         if (!instance)
 194                 return 0;
 195         ePtr<Font> fnt;
 196         getFont(fnt, font.family.c_str(), font.pointSize);
 197         if (!fnt)
 198                 return 0;
 199         singleLock s(ftlock);
 200         FT_Face current_face;
 201         if (FTC_Manager_Lookup_Size(cacheManager, &fnt->font.font, &current_face, &fnt->size)<0)
 202         {
 203                 delete fnt;
 204                 eDebug("FTC_Manager_Lookup_Size failed!");
 205                 return 0;
 206         }
 207         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 208         float height=(current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap/2.0)/64;
 209         delete fnt;
 210         return height;
 211 }
 212
 213
 214 fontRenderClass::~fontRenderClass()
 215 {
 216         singleLock s(ftlock);
 217         while(font)
 218         {
 219                 fontListEntry *f=font;
 220                 font=font->next;
 221                 delete f;
 222         }
 223 //      auskommentiert weil freetype und enigma die kritische masse des suckens ueberschreiten.
 224 //      FTC_Manager_Done(cacheManager);
 225 //      FT_Done_FreeType(library);
 226 }
 227
 228 int fontRenderClass::getFont(ePtr<Font> &font, const eString &face, int size, int tabwidth)
 229 {
 230         FTC_FaceID id=getFaceID(face);
 231         if (!id)
 232         {
 233                 font = 0;
 234                 return -1;
 235         }
 236         font = new Font(this, id, size * ((fontListEntry*)id)->scale / 100, tabwidth);
 237         return 0;
 238 }
 239
 240 DEFINE_REF(Font);
 241
 242 Font::Font(fontRenderClass *render, FTC_FaceID faceid, int isize, int tw): ref(0), tabwidth(tw)
 243 {
 244         renderer=render;
 245         font.font.face_id=faceid;
 246         font.font.pix_width     = isize;
 247         font.font.pix_height = isize;
 248         font.image_type = ftc_image_grays;
 249         height=isize;
 250         if (tabwidth==-1)
 251                 tabwidth=8*isize;
 252         ref=0;
 253 //      font.image_type |= ftc_image_flag_autohinted;
 254 }
 255
 256 FT_Error Font::getGlyphBitmap(FT_ULong glyph_index, FTC_SBit *sbit)
 257 {
 258         return renderer->getGlyphBitmap(&font, glyph_index, sbit);
 259 }
 260
 261 Font::~Font()
 262 {
 263 }
 264
 265 int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt glyphIndex, int flags, int rflags)
 266 {
 267         FTC_SBit glyph;
 268         if (current_font->getGlyphBitmap(glyphIndex, &glyph))
 269                 return 1;
 270
 271         int nx=cursor.x();
 272
 273         nx+=glyph->xadvance;
 274
 275         if (
 276                         (rflags&RS_WRAP) &&
 277                         (nx >= area.right())
 278                 )
 279         {
 280                 int cnt = 0;
 281                 glyphString::reverse_iterator i(glyphs.rbegin());
 282                 while (i != glyphs.rend())
 283                 {
 284                         if (i->flags&(GS_ISSPACE|GS_ISFIRST))
 285                                 break;
 286                         cnt++;
 287                         ++i;
 288                 }
 289                 if (i != glyphs.rend()
 290                         && ((i->flags&(GS_ISSPACE|GS_ISFIRST))==GS_ISSPACE)
 291                         && cnt )
 292                 {
 293                         --i;
 294                         int linelength=cursor.x()-i->x;
 295                         i->flags|=GS_ISFIRST;
 296                         ePoint offset=ePoint(i->x, i->y);
 297                         newLine(rflags);
 298                         offset-=cursor;
 299                         do
 300                         {
 301                                 i->x-=offset.x();
 302                                 i->y-=offset.y();
 303                                 i->bbox.moveBy(-offset.x(), -offset.y());
 304                         }
 305                         while (i-- != glyphs.rbegin()); // rearrange them into the next line
 306                         cursor+=ePoint(linelength, 0);  // put the cursor after that line
 307                 }
 308                 else
 309                 {
 310                         if (cnt)
 311                         {
 312                                 newLine(rflags);
 313                                 flags|=GS_ISFIRST;
 314                         }
 315                 }
 316         }
 317
 318         int xadvance=glyph->xadvance, kern=0;
 319
 320         if (previous && use_kerning)
 321         {
 322                 FT_Vector delta;
 323                 FT_Get_Kerning(current_face, previous, glyphIndex, ft_kerning_default, &delta);
 324                 kern=delta.x>>6;
 325         }
 326
 327         pGlyph ng;
 328         ng.bbox.setLeft( (flags&GS_ISFIRST|cursor.x()-1)+glyph->left );
 329         ng.bbox.setTop( cursor.y() - glyph->top );
 330         ng.bbox.setWidth( glyph->width );
 331         ng.bbox.setHeight( glyph->height );
 332
 333         xadvance+=kern;
 334
 335         ng.x=cursor.x()+kern;
 336         ng.y=cursor.y();
 337         ng.w=xadvance;
 338         ng.font=current_font;
 339         ng.glyph_index=glyphIndex;
 340         ng.flags=flags;
 341         glyphs.push_back(ng);
 342
 343         cursor+=ePoint(xadvance, 0);
 344         previous=glyphIndex;
 345         return 0;
 346 }
 347
 348 void eTextPara::calc_bbox()
 349 {
 350         boundBox.setLeft( 32000 );
 351         boundBox.setTop( 32000 );
 352         boundBox.setRight( -32000 );         // for each glyph image, compute its bounding box, translate it,
 353         boundBox.setBottom( -32000 );
 354         // and grow the string bbox
 355
 356         for ( glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 357         {
 358                 if ( i->flags & GS_ISSPACE )
 359                         continue;
 360                 if ( i->bbox.left() < boundBox.left() )
 361                         boundBox.setLeft( i->bbox.left() );
 362                 if ( i->bbox.top() < boundBox.top() )
 363                         boundBox.setTop( i->bbox.top() );
 364                 if ( i->bbox.right() > boundBox.right() )
 365                         boundBox.setRight( i->bbox.right() );
 366                 if ( i->bbox.bottom() > boundBox.bottom() )
 367                         boundBox.setBottom( i->bbox.bottom() );
 368         }
 369 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
 370         if ( glyphs.size() )
 371                 bboxValid=1;
 372 }
 373
 374 void eTextPara::newLine(int flags)
 375 {
 376         if (maximum.width()<cursor.x())
 377                 maximum.setWidth(cursor.x());
 378         cursor.setX(left);
 379         previous=0;
 380         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
 381         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap*1/2)>>6);
 382         if (maximum.height()<cursor.y())
 383                 maximum.setHeight(cursor.y());
 384         previous=0;
 385 }
 386
 387 eTextPara::~eTextPara()
 388 {
 389         clear();
 390         if (refcnt>=0)
 391                 eFatal("verdammt man der war noch gelockt :/\n");
 392 }
 393
 394 void eTextPara::destroy()
 395 {
 396         singleLock s(refcntlck);
 397
 398         if (!refcnt--)
 399                 delete this;
 400 }
 401
 402 eTextPara *eTextPara::grab()
 403 {
 404         singleLock s(refcntlck);
 405
 406         refcnt++;
 407         return this;
 408 }
 409
 410 void eTextPara::setFont(const gFont *font)
 411 {
 412         if (refcnt)
 413                 eFatal("mod. after lock");
 414         ePtr<Font> fnt, replacement;
 415         fontRenderClass::getInstance()->getFont(fnt, font->family.c_str(), font->pointSize);
 416         if (!fnt)
 417                 eWarning("FONT '%s' MISSING!", font->family.c_str());
 418         fontRenderClass::getInstance()->getFont(replacement, replacement_facename.c_str(), font->pointSize);
 419         setFont(fnt, replacement);
 420 }
 421
 422 eString eTextPara::replacement_facename;
 423
 424 void eTextPara::setFont(Font *fnt, Font *replacement)
 425 {
 426         if (refcnt)
 427                 eFatal("mod. after lock");
 428         if (!fnt)
 429                 return;
 430         current_font=fnt;
 431         replacement_font=replacement;
 432         singleLock s(ftlock);
 433
 434                         // we ask for replacment_font first becauseof the cache
 435         if (replacement_font)
 436         {
 437                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager,
 438                                 &replacement_font->font.font, &replacement_face,
 439                                 &replacement_font->size)<0)
 440                 {
 441                         eDebug("FTC_Manager_Lookup_Size failed!");
 442                         return;
 443                 }
 444         }
 445         if (current_font)
 446         {
 447                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 448                 {
 449                         eDebug("FTC_Manager_Lookup_Size failed!");
 450                         return;
 451                 }
 452         }
 453         cache_current_font=&current_font->font.font;
 454         previous=0;
 455         use_kerning=FT_HAS_KERNING(current_face);
 456 }
 457
 458 void
 459 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
 460
 461 int eTextPara::renderString(const eString &string, int rflags)
 462 {
 463         singleLock s(ftlock);
 464
 465         if (refcnt)
 466                 eFatal("mod. after lock");
 467
 468         if (!current_font)
 469                 return -1;
 470
 471         if (cursor.y()==-1)
 472         {
 473                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
 474                 left=cursor.x();
 475         }
 476
 477         if (&current_font->font.font != cache_current_font)
 478         {
 479                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 480                 {
 481                         eDebug("FTC_Manager_Lookup_Size failed!");
 482                         return -1;
 483                 }
 484                 cache_current_font=&current_font->font.font;
 485         }
 486
 487         std::vector<unsigned long> uc_string, uc_visual;
 488         uc_string.reserve(string.length());
 489
 490         eString::const_iterator p(string.begin());
 491
 492         while(p != string.end())
 493         {
 494                 unsigned int unicode=*p++;
 495
 496                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
 497                 {
 498                         if ((unicode & 0xE0)==0xC0) // two bytes
 499                         {
 500                                 unicode&=0x1F;
 501                                 unicode<<=6;
 502                                 if (p != string.end())
 503                                         unicode|=(*p++)&0x3F;
 504                         } else if ((unicode & 0xF0)==0xE0) // three bytes
 505                         {
 506                                 unicode&=0x0F;
 507                                 unicode<<=6;
 508                                 if (p != string.end())
 509                                         unicode|=(*p++)&0x3F;
 510                                 unicode<<=6;
 511                                 if (p != string.end())
 512                                         unicode|=(*p++)&0x3F;
 513                         } else if ((unicode & 0xF8)==0xF0) // four bytes
 514                         {
 515                                 unicode&=0x07;
 516                                 unicode<<=6;
 517                                 if (p != string.end())
 518                                         unicode|=(*p++)&0x3F;
 519                                 unicode<<=6;
 520                                 if (p != string.end())
 521                                         unicode|=(*p++)&0x3F;
 522                                 unicode<<=6;
 523                                 if (p != string.end())
 524                                         unicode|=(*p++)&0x3F;
 525                         }
 526                 }
 527                 uc_string.push_back(unicode);
 528         }
 529
 530         std::vector<unsigned long> uc_shape;
 531
 532                 // character -> glyph conversion
 533         shape(uc_shape, uc_string);
 534
 535                 // now do the usual logical->visual reordering
 536 #ifdef HAVE_FRIBIDI
 537         FriBidiCharType dir=FRIBIDI_TYPE_ON;
 538         {
 539                 int size=uc_shape.size();
 540                 uc_visual.resize(size);
 541                 // gaaanz lahm, aber anders geht das leider nicht, sorry.
 542                 FriBidiChar array[size], target[size];
 543                 std::copy(uc_shape.begin(), uc_shape.end(), array);
 544                 fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
 545                 uc_visual.assign(target, target+size);
 546         }
 547 #else
 548         uc_visual=uc_shape;
 549 #endif
 550
 551         glyphs.reserve(uc_visual.size());
 552
 553         int nextflags = 0;
 554
 555         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
 556                 i != uc_visual.end(); ++i)
 557         {
 558                 int isprintable=1;
 559                 int flags = nextflags;
 560                 nextflags = 0;
 561                 if (!(rflags&RS_DIRECT))
 562                 {
 563                         switch (*i)
 564                         {
 565                         case '\\':
 566                         {
 567                                 unsigned long c = *(i+1);
 568                                 switch (c)
 569                                 {
 570                                         case 'n':
 571                                                 i++;
 572                                                 goto newline;
 573                                         case 't':
 574                                                 i++;
 575                                                 goto tab;
 576                                         case 'r':
 577                                                 i++;
 578                                                 goto nprint;
 579                                         default:
 580                                         ;
 581                                 }
 582                                 break;
 583                         }
 584                         case '\t':
 585 tab:            isprintable=0;
 586                                 cursor+=ePoint(current_font->tabwidth, 0);
 587                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
 588                                 break;
 589                         case 0x8A:
 590                         case 0xE08A:
 591                         case '\n':
 592 newline:isprintable=0;
 593                                 newLine(rflags);
 594                                 nextflags|=GS_ISFIRST;
 595                                 break;
 596                         case '\r':
 597                         case 0x86: case 0xE086:
 598                         case 0x87: case 0xE087:
 599 nprint: isprintable=0;
 600                                 break;
 601                         case ' ':
 602                                 flags|=GS_ISSPACE;
 603                         default:
 604                                 break;
 605                         }
 606                 }
 607                 if (isprintable)
 608                 {
 609                         FT_UInt index;
 610
 611                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(current_face, *i);
 612
 613                         if (!index)
 614                         {
 615                                 if (replacement_face)
 616                                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(replacement_face, *i);
 617
 618                                 if (!index)
 619                                         eDebug("unicode %d ('%c') not present", *i, *i);
 620                                 else
 621                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
 622                         } else
 623                                 appendGlyph(current_font, current_face, index, flags, rflags);
 624                 }
 625         }
 626         bboxValid=false;
 627         calc_bbox();
 628 #ifdef HAVE_FRIBIDI
 629         if (dir & FRIBIDI_MASK_RTL)
 630                 realign(dirRight);
 631 #endif
 632         return 0;
 633 }
 634
 635 void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
 636 {
 637         singleLock s(ftlock);
 638
 639         if (!current_font)
 640                 return;
 641
 642         if (&current_font->font.font != cache_current_font)
 643         {
 644                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
 645                 {
 646                         eDebug("FTC_Manager_Lookup_Size failed!");
 647                         return;
 648                 }
 649                 cache_current_font=&current_font->font.font;
 650         }
 651
 652         ePtr<gPixmap> target;
 653         dc.getPixmap(target);
 654         gSurface *surface = target->surface;
 655
 656         register int opcode;
 657         gColor *lookup8=0;
 658         __u32 lookup32[16];
 659
 660         if (surface->bpp == 8)
 661         {
 662                 if (surface->clut.data)
 663                 {
 664                         lookup8=getColor(surface->clut, background, foreground).lookup;
 665                         opcode=0;
 666                 } else
 667                         opcode=1;
 668         } else if (surface->bpp == 32)
 669         {
 670                 opcode=3;
 671                 if (surface->clut.data)
 672                 {
 673                         lookup8=getColor(surface->clut, background, foreground).lookup;
 674                         for (int i=0; i<16; ++i)
 675                                 lookup32[i]=((surface->clut.data[lookup8[i]].a<<24)|
 676                                         (surface->clut.data[lookup8[i]].r<<16)|
 677                                         (surface->clut.data[lookup8[i]].g<<8)|
 678                                         (surface->clut.data[lookup8[i]].b))^0xFF000000;
 679                 } else
 680                 {
 681                         for (int i=0; i<16; ++i)
 682                                 lookup32[i]=(0x010101*i)|0xFF000000;
 683                 }
 684         } else
 685         {
 686                 eWarning("can't render to %dbpp", surface->bpp);
 687                 return;
 688         }
 689
 690         gRegion area(eRect(0, 0, surface->x, surface->y));
 691         gRegion clip;
 692         clip.intersect(area, dc.getClip());
 693
 694         int buffer_stride=surface->stride;
 695
 696         for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
 697         {
 698                 static FTC_SBit glyph_bitmap;
 699                 if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
 700                         continue;
 701                 int rx=i->x+glyph_bitmap->left + offset.x();
 702                 int ry=i->y-glyph_bitmap->top  + offset.y();
 703                 __u8 *d=(__u8*)(surface->data)+buffer_stride*ry+rx*surface->bypp;
 704                 __u8 *s=glyph_bitmap->buffer;
 705                 register int sx=glyph_bitmap->width;
 706                 int sy=glyph_bitmap->height;
 707                 if ((sy+ry) >= clip.extends.bottom())
 708                         sy=clip.extends.bottom()-ry;
 709                 if ((sx+rx) >= clip.extends.right())
 710                         sx=clip.extends.right()-rx;
 711                 if (rx < clip.extends.left())
 712                 {
 713                         int diff=clip.extends.left()-rx;
 714                         s+=diff;
 715                         sx-=diff;
 716                         rx+=diff;
 717                         d+=diff*surface->bypp;
 718                 }
 719                 if (ry < clip.extends.top())
 720                 {
 721                         int diff=clip.extends.top()-ry;
 722                         s+=diff*glyph_bitmap->pitch;
 723                         sy-=diff;
 724                         ry+=diff;
 725                         d+=diff*buffer_stride;
 726                 }
 727                 if (sx>0)
 728                         for (int ay=0; ay<sy; ay++)
 729                         {
 730                                 if (!opcode)            // 4bit lookup to 8bit
 731                                 {
 732                                         register __u8 *td=d;
 733                                         register int ax;
 734                                         for (ax=0; ax<sx; ax++)
 735                                         {
 736                                                 register int b=(*s++)>>4;
 737                                                 if(b)
 738                                                         *td++=lookup8[b];
 739                                                 else
 740                                                         td++;
 741                                         }
 742                                 } else if (opcode == 1) // 8bit direct
 743                                 {
 744                                         register __u8 *td=d;
 745                                         register int ax;
 746                                         for (ax=0; ax<sx; ax++)
 747                                         {
 748                                                 register int b=*s++;
 749                                                 *td++^=b;
 750                                         }
 751                                 } else
 752                                 {
 753                                         register __u32 *td=(__u32*)d;
 754                                         register int ax;
 755                                         for (ax=0; ax<sx; ax++)
 756                                         {
 757                                                 register int b=(*s++)>>4;
 758                                                 if(b)
 759                                                         *td++=lookup32[b];
 760                                                 else
 761                                                         td++;
 762                                         }
 763                                 }
 764                                 s+=glyph_bitmap->pitch-sx;
 765                                 d+=buffer_stride;
 766                         }
 767         }
 768 }
 769
 770 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
 771 {
 772         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
 773         if (dir==dirLeft)
 774                 return;
 775         while (c != glyphs.end())
 776         {
 777                 int linelength=0;
 778                 int numspaces=0, num=0;
 779                 begin=end;
 780
 781                 ASSERT( end != glyphs.end());
 782
 783                         // zeilenende suchen
 784                 do {
 785                         last=end;
 786                         ++end;
 787                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
 788                         // end zeigt jetzt auf begin der naechsten zeile
 789
 790                 for (c=begin; c!=end; ++c)
 791                 {
 792                                 // space am zeilenende skippen
 793                         if ((c==last) && (c->flags&GS_ISSPACE))
 794                                 continue;
 795
 796                         if (c->flags&GS_ISSPACE)
 797                                 numspaces++;
 798                         linelength+=c->w;
 799                         num++;
 800                 }
 801
 802                 if (!num)               // line mit nur einem space
 803                         continue;
 804
 805                 switch (dir)
 806                 {
 807                 case dirRight:
 808                 case dirCenter:
 809                 {
 810                         int offset=area.width()-linelength;
 811                         if (dir==dirCenter)
 812                                 offset/=2;
 813                         offset+=area.left();
 814                         while (begin != end)
 815                         {
 816                                 begin->bbox.moveBy(offset-begin->x,0);
 817                                 begin->x=offset;
 818                                 offset+=begin->w;
 819                                 ++begin;
 820                         }
 821                         break;
 822                 }
 823                 case dirBlock:
 824                 {
 825                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
 826                                 continue;
 827                         int spacemode;
 828                         if (numspaces)
 829                                 spacemode=1;
 830                         else
 831                                 spacemode=0;
 832                         if ((!spacemode) && (num<2))
 833                                 break;
 834                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
 835                         int curoff=0;
 836                         while (begin != end)
 837                         {
 838                                 int doadd=0;
 839                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
 840                                         doadd=1;
 841                                 begin->x+=curoff>>8;
 842                                 begin->bbox.moveBy(curoff>>8,0);
 843                                 if (doadd)
 844                                         curoff+=off;
 845                                 ++begin;
 846                         }
 847                         break;
 848                 }
 849                 }
 850         }
 851         bboxValid=false;
 852         calc_bbox();
 853 }
 854
 855 void eTextPara::clear()
 856 {
 857         singleLock s(ftlock);
 858
 859         current_font = 0;
 860         replacement_font = 0;
 861
 862         glyphs.clear();
 863 }
 864
 865 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");