fixed refcount of eListboxPythonStringContent
[enigma2.git] / lib / gdi / font.cpp
1 #include <lib/gdi/font.h>
2
3 #include <stdio.h>
4 #include <stdlib.h>
5 #include <ctype.h>
6 #include <pthread.h>
7 #include <sys/types.h>
8 #include <unistd.h>
9
10 // use this for init Freetype...
11 #include <ft2build.h>
12 #include FT_FREETYPE_H
13
14 #include <lib/base/eerror.h>
15 #include <lib/gdi/lcd.h>
16 #include <lib/gdi/grc.h>
17 #include <lib/base/elock.h>
18 #include <lib/base/init.h>
19 #include <lib/base/init_num.h>
20
21 //#define HAVE_FRIBIDI
22 // until we have it in the cdk
23
24 #ifdef HAVE_FRIBIDI
25 #include <fribidi/fribidi.h>
26 #endif
27
28 #include <map>
29
30 fontRenderClass *fontRenderClass::instance;
31
32 static pthread_mutex_t ftlock=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
33 static pthread_mutex_t refcntlck=PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP;
34
35 static FTC_Font cache_current_font=0;
36
37 struct fntColorCacheKey
38 {
39         gRGB start, end;
40         fntColorCacheKey(const gRGB &start, const gRGB &end)
41                 : start(start), end(end)
42         {
43         }
44         bool operator <(const fntColorCacheKey &c) const
45         {
46                 if (start < c.start)
47                         return 1;
48                 else if (start == c.start)
49                         return end < c.end;
50                 return 0;
51         }
52 };
53
54 std::map<fntColorCacheKey,gLookup> colorcache;
55
56 static gLookup &getColor(const gPalette &pal, const gRGB &start, const gRGB &end)
57 {
58         fntColorCacheKey key(start, end);
59         std::map<fntColorCacheKey,gLookup>::iterator i=colorcache.find(key);
60         if (i != colorcache.end())
61                 return i->second;
62         gLookup &n=colorcache.insert(std::pair<fntColorCacheKey,gLookup>(key,gLookup())).first->second;
63         eDebug("[FONT] creating new font color cache entry %02x%02x%02x%02x .. %02x%02x%02x%02x", start.a, start.r, start.g, start.b,
64                 end.a, end.r, end.g, end.b);
65         n.build(16, pal, start, end);
66         for (int i=0; i<16; i++)
67                 eDebugNoNewLine("%02x|%02x%02x%02x%02x ", (int)n.lookup[i], pal.data[n.lookup[i]].a, pal.data[n.lookup[i]].r, pal.data[n.lookup[i]].g, pal.data[n.lookup[i]].b);
68         eDebug("");
69         return n;
70 }
71
72 fontRenderClass *fontRenderClass::getInstance()
73 {
74         return instance;
75 }
76
77 FT_Error myFTC_Face_Requester(FTC_FaceID        face_id,
78                                                                                                                         FT_Library      library,
79                                                                                                                         FT_Pointer      request_data,
80                                                                                                                         FT_Face*                aface)
81 {
82         return ((fontRenderClass*)request_data)->FTC_Face_Requester(face_id, aface);
83 }
84
85
86 FT_Error fontRenderClass::FTC_Face_Requester(FTC_FaceID face_id, FT_Face* aface)
87 {
88         fontListEntry *font=(fontListEntry *)face_id;
89         if (!font)
90                 return -1;
91         
92 //      eDebug("[FONT] FTC_Face_Requester (%s)", font->face.c_str());
93
94         int error;
95         if ((error=FT_New_Face(library, font->filename.c_str(), 0, aface)))
96         {
97                 eDebug(" failed: %s", strerror(error));
98                 return error;
99         }
100         FT_Select_Charmap(*aface, ft_encoding_unicode);
101         return 0;
102 }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
103
104 FTC_FaceID fontRenderClass::getFaceID(const std::string &face)
105 {
106         for (fontListEntry *f=font; f; f=f->next)
107         {
108                 if (f->face == face)
109                         return (FTC_FaceID)f;
110         }
111         return 0;
112 }
113
114 FT_Error fontRenderClass::getGlyphBitmap(FTC_Image_Desc *font, FT_ULong glyph_index, FTC_SBit *sbit)
115 {
116         FT_Error res=FTC_SBit_Cache_Lookup(sbitsCache, font, glyph_index, sbit);
117         return res;
118 }
119
120 std::string fontRenderClass::AddFont(const std::string &filename, const std::string &name, int scale)
121 {
122         eDebugNoNewLine("[FONT] adding font %s...", filename.c_str());
123         fflush(stdout);
124         int error;
125         fontListEntry *n=new fontListEntry;
126
127         n->scale=scale;
128         FT_Face face;
129         singleLock s(ftlock);
130
131         if ((error=FT_New_Face(library, filename.c_str(), 0, &face)))
132                 eFatal(" failed: %s", strerror(error));
133
134         n->filename=filename;
135         n->face=name;
136         FT_Done_Face(face);
137
138         n->next=font;
139         eDebug("OK (%s)", n->face.c_str());
140         font=n;
141
142         return n->face;
143 }
144
145 fontRenderClass::fontListEntry::~fontListEntry()
146 {
147 }
148
149 fontRenderClass::fontRenderClass(): fb(fbClass::getInstance())
150 {
151         instance=this;
152         eDebug("[FONT] initializing lib...");
153         {
154                 if (FT_Init_FreeType(&library))
155                 {
156                         eDebug("[FONT] initializing failed.");
157                         return;
158                 }
159         }
160         eDebug("[FONT] loading fonts...");
161         fflush(stdout);
162         font=0;
163         
164         int maxbytes=4*1024*1024;
165         eDebug("[FONT] Intializing font cache, using max. %dMB...", maxbytes/1024/1024);
166         fflush(stdout);
167         {
168                 if (FTC_Manager_New(library, 8, 8, maxbytes, myFTC_Face_Requester, this, &cacheManager))
169                 {
170                         eDebug("[FONT] initializing font cache failed!");
171                         return;
172                 }
173                 if (!cacheManager)
174                 {
175                         eDebug("[FONT] initializing font cache manager error.");
176                         return;
177                 }
178                 if (FTC_SBit_Cache_New(cacheManager, &sbitsCache))
179                 {
180                         eDebug("[FONT] initializing font cache sbit failed!");
181                         return;
182                 }
183                 if (FTC_Image_Cache_New(cacheManager, &imageCache))
184                 {
185                         eDebug("[FONT] initializing font cache imagecache failed!");
186                 }
187         }
188         return;
189 }
190
191 float fontRenderClass::getLineHeight(const gFont& font)
192 {
193         if (!instance)
194                 return 0;
195         ePtr<Font> fnt;
196         getFont(fnt, font.family.c_str(), font.pointSize);
197         if (!fnt)
198                 return 0;
199         singleLock s(ftlock);
200         FT_Face current_face;
201         if (FTC_Manager_Lookup_Size(cacheManager, &fnt->font.font, &current_face, &fnt->size)<0)
202         {
203                 delete fnt;
204                 eDebug("FTC_Manager_Lookup_Size failed!");
205                 return 0;
206         }
207         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
208         float height=(current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap/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 std::string &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): 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 //      font.image_type |= ftc_image_flag_autohinted;
253 }
254
255 FT_Error Font::getGlyphBitmap(FT_ULong glyph_index, FTC_SBit *sbit)
256 {
257         return renderer->getGlyphBitmap(&font, glyph_index, sbit);
258 }
259
260 Font::~Font()
261 {
262 }
263
264 DEFINE_REF(eTextPara);
265
266 int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt glyphIndex, int flags, int rflags)
267 {
268         FTC_SBit glyph;
269         if (current_font->getGlyphBitmap(glyphIndex, &glyph))
270                 return 1;
271
272         int nx=cursor.x();
273
274         nx+=glyph->xadvance;
275         
276         if (
277                         (rflags&RS_WRAP) && 
278                         (nx >= area.right())
279                 )
280         {
281                 int cnt = 0;
282                 glyphString::reverse_iterator i(glyphs.rbegin());
283                 while (i != glyphs.rend())
284                 {
285                         if (i->flags&(GS_ISSPACE|GS_ISFIRST))
286                                 break;
287                         cnt++;
288                         ++i;
289                 } 
290                 if (i != glyphs.rend()
291                         && ((i->flags&(GS_ISSPACE|GS_ISFIRST))==GS_ISSPACE)
292                         && cnt )
293                 {
294                         --i;
295                         int linelength=cursor.x()-i->x;
296                         i->flags|=GS_ISFIRST;
297                         ePoint offset=ePoint(i->x, i->y);
298                         newLine(rflags);
299                         offset-=cursor;
300                         do
301                         {
302                                 i->x-=offset.x();
303                                 i->y-=offset.y();
304                                 i->bbox.moveBy(-offset.x(), -offset.y());
305                         }
306                         while (i-- != glyphs.rbegin()); // rearrange them into the next line
307                         cursor+=ePoint(linelength, 0);  // put the cursor after that line
308                 }
309                 else
310                 {
311                         if (cnt)
312                         {
313                                 newLine(rflags);
314                                 flags|=GS_ISFIRST;
315                         }
316                 }
317         }
318
319         int xadvance=glyph->xadvance, kern=0;
320         
321         if (previous && use_kerning)
322         {
323                 FT_Vector delta;
324                 FT_Get_Kerning(current_face, previous, glyphIndex, ft_kerning_default, &delta);
325                 kern=delta.x>>6;
326         }
327
328         pGlyph ng;
329         ng.bbox.setLeft( (flags&GS_ISFIRST|cursor.x()-1)+glyph->left );
330         ng.bbox.setTop( cursor.y() - glyph->top );
331         ng.bbox.setWidth( glyph->width );
332         ng.bbox.setHeight( glyph->height );
333
334         xadvance+=kern;
335
336         ng.x=cursor.x()+kern;
337         ng.y=cursor.y();
338         ng.w=xadvance;
339         ng.font=current_font;
340         ng.glyph_index=glyphIndex;
341         ng.flags=flags;
342         glyphs.push_back(ng);
343
344         cursor+=ePoint(xadvance, 0);
345         previous=glyphIndex;
346         return 0;
347 }
348
349 void eTextPara::calc_bbox()
350 {
351         boundBox.setLeft( 32000 );
352         boundBox.setTop( 32000 );
353         boundBox.setRight( -32000 );         // for each glyph image, compute its bounding box, translate it,
354         boundBox.setBottom( -32000 );
355         // and grow the string bbox
356
357         for ( glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
358         {
359                 if ( i->flags & GS_ISSPACE )
360                         continue;
361                 if ( i->bbox.left() < boundBox.left() )
362                         boundBox.setLeft( i->bbox.left() );
363                 if ( i->bbox.top() < boundBox.top() )
364                         boundBox.setTop( i->bbox.top() );
365                 if ( i->bbox.right() > boundBox.right() )
366                         boundBox.setRight( i->bbox.right() );
367                 if ( i->bbox.bottom() > boundBox.bottom() )
368                         boundBox.setBottom( i->bbox.bottom() );
369         }
370 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
371         if ( glyphs.size() )
372                 bboxValid=1;
373 }
374
375 void eTextPara::newLine(int flags)
376 {
377         if (maximum.width()<cursor.x())
378                 maximum.setWidth(cursor.x());
379         cursor.setX(left);
380         previous=0;
381         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
382         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap*1/2)>>6);
383         if (maximum.height()<cursor.y())
384                 maximum.setHeight(cursor.y());
385         previous=0;
386 }
387
388 eTextPara::~eTextPara()
389 {
390         clear();
391 }
392
393 void eTextPara::setFont(const gFont *font)
394 {
395         ePtr<Font> fnt, replacement;
396         fontRenderClass::getInstance()->getFont(fnt, font->family.c_str(), font->pointSize);
397         if (!fnt)
398                 eWarning("FONT '%s' MISSING!", font->family.c_str());
399         fontRenderClass::getInstance()->getFont(replacement, replacement_facename.c_str(), font->pointSize);
400         setFont(fnt, replacement);
401 }
402
403 std::string eTextPara::replacement_facename;
404
405 void eTextPara::setFont(Font *fnt, Font *replacement)
406 {
407         if (!fnt)
408                 return;
409         current_font=fnt;
410         replacement_font=replacement;
411         singleLock s(ftlock);
412
413                         // we ask for replacment_font first becauseof the cache
414         if (replacement_font)
415         {
416                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, 
417                                 &replacement_font->font.font, &replacement_face, 
418                                 &replacement_font->size)<0)
419                 {
420                         eDebug("FTC_Manager_Lookup_Size failed!");
421                         return;
422                 }
423         }
424         if (current_font)
425         {
426                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
427                 {
428                         eDebug("FTC_Manager_Lookup_Size failed!");
429                         return;
430                 }
431         }
432         cache_current_font=&current_font->font.font;
433         previous=0;
434         use_kerning=FT_HAS_KERNING(current_face);
435 }
436
437 void
438 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
439
440 int eTextPara::renderString(const std::string &string, int rflags)
441 {
442         singleLock s(ftlock);
443         
444         if (!current_font)
445                 return -1;
446                 
447         if (cursor.y()==-1)
448         {
449                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
450                 left=cursor.x();
451         }
452                 
453         if (&current_font->font.font != cache_current_font)
454         {
455                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
456                 {
457                         eDebug("FTC_Manager_Lookup_Size failed!");
458                         return -1;
459                 }
460                 cache_current_font=&current_font->font.font;
461         }
462         
463         std::vector<unsigned long> uc_string, uc_visual;
464         uc_string.reserve(string.length());
465         
466         std::string::const_iterator p(string.begin());
467
468         while(p != string.end())
469         {
470                 unsigned int unicode=*p++;
471
472                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
473                 {
474                         if ((unicode & 0xE0)==0xC0) // two bytes
475                         {
476                                 unicode&=0x1F;
477                                 unicode<<=6;
478                                 if (p != string.end())
479                                         unicode|=(*p++)&0x3F;
480                         } else if ((unicode & 0xF0)==0xE0) // three bytes
481                         {
482                                 unicode&=0x0F;
483                                 unicode<<=6;
484                                 if (p != string.end())
485                                         unicode|=(*p++)&0x3F;
486                                 unicode<<=6;
487                                 if (p != string.end())
488                                         unicode|=(*p++)&0x3F;
489                         } else if ((unicode & 0xF8)==0xF0) // four bytes
490                         {
491                                 unicode&=0x07;
492                                 unicode<<=6;
493                                 if (p != string.end())
494                                         unicode|=(*p++)&0x3F;
495                                 unicode<<=6;
496                                 if (p != string.end())
497                                         unicode|=(*p++)&0x3F;
498                                 unicode<<=6;
499                                 if (p != string.end())
500                                         unicode|=(*p++)&0x3F;
501                         }
502                 }
503                 uc_string.push_back(unicode);
504         }
505
506         std::vector<unsigned long> uc_shape;
507
508                 // character -> glyph conversion
509         shape(uc_shape, uc_string);
510         
511                 // now do the usual logical->visual reordering
512 #ifdef HAVE_FRIBIDI     
513         FriBidiCharType dir=FRIBIDI_TYPE_ON;
514         {
515                 int size=uc_shape.size();
516                 uc_visual.resize(size);
517                 // gaaanz lahm, aber anders geht das leider nicht, sorry.
518                 FriBidiChar array[size], target[size];
519                 std::copy(uc_shape.begin(), uc_shape.end(), array);
520                 fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
521                 uc_visual.assign(target, target+size);
522         }
523 #else
524         uc_visual=uc_shape;
525 #endif
526
527         glyphs.reserve(uc_visual.size());
528         
529         int nextflags = 0;
530         
531         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
532                 i != uc_visual.end(); ++i)
533         {
534                 int isprintable=1;
535                 int flags = nextflags;
536                 nextflags = 0;
537                 if (!(rflags&RS_DIRECT))
538                 {
539                         switch (*i)
540                         {
541                         case '\\':
542                         {
543                                 unsigned long c = *(i+1);
544                                 switch (c)
545                                 {
546                                         case 'n':
547                                                 i++;
548                                                 goto newline;
549                                         case 't':
550                                                 i++;
551                                                 goto tab;
552                                         case 'r':
553                                                 i++;
554                                                 goto nprint;
555                                         default:
556                                         ;
557                                 }
558                                 break;
559                         }
560                         case '\t':
561 tab:            isprintable=0;
562                                 cursor+=ePoint(current_font->tabwidth, 0);
563                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
564                                 break;
565                         case 0x8A:
566                         case 0xE08A:
567                         case '\n':
568 newline:isprintable=0;
569                                 newLine(rflags);
570                                 nextflags|=GS_ISFIRST;
571                                 break;
572                         case '\r':
573                         case 0x86: case 0xE086:
574                         case 0x87: case 0xE087:
575 nprint: isprintable=0;
576                                 break;
577                         case ' ':
578                                 flags|=GS_ISSPACE;
579                         default:
580                                 break;
581                         }
582                 }
583                 if (isprintable)
584                 {
585                         FT_UInt index;
586
587                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(current_face, *i);
588
589                         if (!index)
590                         {
591                                 if (replacement_face)
592                                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(replacement_face, *i);
593
594                                 if (!index)
595                                         eDebug("unicode %d ('%c') not present", *i, *i);
596                                 else
597                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
598                         } else
599                                 appendGlyph(current_font, current_face, index, flags, rflags);
600                 }
601         }
602         bboxValid=false;
603         calc_bbox();
604 #ifdef HAVE_FRIBIDI
605         if (dir & FRIBIDI_MASK_RTL)
606                 realign(dirRight);
607 #endif
608         return 0;
609 }
610
611 void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
612 {
613         singleLock s(ftlock);
614         
615         if (!current_font)
616                 return;
617
618         if (&current_font->font.font != cache_current_font)
619         {
620                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
621                 {
622                         eDebug("FTC_Manager_Lookup_Size failed!");
623                         return;
624                 }
625                 cache_current_font=&current_font->font.font;
626         }
627
628         ePtr<gPixmap> target;
629         dc.getPixmap(target);
630         gSurface *surface = target->surface;
631
632         register int opcode;
633         gColor *lookup8=0;
634         __u32 lookup32[16];
635                 
636         if (surface->bpp == 8)
637         {
638                 if (surface->clut.data)
639                 {
640                         lookup8=getColor(surface->clut, background, foreground).lookup;
641                         opcode=0;
642                 } else
643                         opcode=1;
644         } else if (surface->bpp == 32)
645         {
646                 opcode=3;
647                 if (surface->clut.data)
648                 {
649                         lookup8=getColor(surface->clut, background, foreground).lookup;
650                         for (int i=0; i<16; ++i)
651                                 lookup32[i]=((surface->clut.data[lookup8[i]].a<<24)|
652                                         (surface->clut.data[lookup8[i]].r<<16)|
653                                         (surface->clut.data[lookup8[i]].g<<8)|
654                                         (surface->clut.data[lookup8[i]].b))^0xFF000000;
655                 } else
656                 {
657                         for (int i=0; i<16; ++i)
658                                 lookup32[i]=(0x010101*i)|0xFF000000;
659                 }
660         } else
661         {
662                 eWarning("can't render to %dbpp", surface->bpp);
663                 return;
664         }
665         
666         gRegion area(eRect(0, 0, surface->x, surface->y));
667         gRegion clip = dc.getClip() & area;
668
669         int buffer_stride=surface->stride;
670
671         for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
672         {
673                 static FTC_SBit glyph_bitmap;
674                 if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
675                         continue;
676                 int rx=i->x+glyph_bitmap->left + offset.x();
677                 int ry=i->y-glyph_bitmap->top  + offset.y();
678                 
679                 __u8 *d=(__u8*)(surface->data)+buffer_stride*ry+rx*surface->bypp;
680                 __u8 *s=glyph_bitmap->buffer;
681                 register int sx=glyph_bitmap->width;
682                 int sy=glyph_bitmap->height;
683                 if ((sy+ry) >= clip.extends.bottom())
684                         sy=clip.extends.bottom()-ry;
685                 if ((sx+rx) >= clip.extends.right())
686                         sx=clip.extends.right()-rx;
687                 if (rx < clip.extends.left())
688                 {
689                         int diff=clip.extends.left()-rx;
690                         s+=diff;
691                         sx-=diff;
692                         rx+=diff;
693                         d+=diff*surface->bypp;
694                 }
695                 if (ry < clip.extends.top())
696                 {
697                         int diff=clip.extends.top()-ry;
698                         s+=diff*glyph_bitmap->pitch;
699                         sy-=diff;
700                         ry+=diff;
701                         d+=diff*buffer_stride;
702                 }
703                 if (sx>0)
704                         for (int ay=0; ay<sy; ay++)
705                         {
706                                 if (!opcode)            // 4bit lookup to 8bit
707                                 {
708                                         register __u8 *td=d;
709                                         register int ax;
710                                         
711                                         for (ax=0; ax<sx; ax++)
712                                         {       
713                                                 register int b=(*s++)>>4;
714                                                 if(b)
715                                                         *td++=lookup8[b];
716                                                 else
717                                                         td++;
718                                         }
719                                 } else if (opcode == 1) // 8bit direct
720                                 {
721                                         register __u8 *td=d;
722                                         register int ax;
723                                         for (ax=0; ax<sx; ax++)
724                                         {       
725                                                 register int b=*s++;
726                                                 *td++^=b;
727                                         }
728                                 } else
729                                 {
730                                         register __u32 *td=(__u32*)d;
731                                         register int ax;
732                                         for (ax=0; ax<sx; ax++)
733                                         {       
734                                                 register int b=(*s++)>>4;
735                                                 if(b)
736                                                         *td++=lookup32[b];
737                                                 else
738                                                         td++;
739                                         }
740                                 }
741                                 s+=glyph_bitmap->pitch-sx;
742                                 d+=buffer_stride;
743                         }
744         }
745 }
746
747 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
748 {
749         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
750         if (dir==dirLeft)
751                 return;
752         while (c != glyphs.end())
753         {
754                 int linelength=0;
755                 int numspaces=0, num=0;
756                 begin=end;
757                 
758                 ASSERT( end != glyphs.end());
759                 
760                         // zeilenende suchen
761                 do {
762                         last=end;
763                         ++end;
764                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
765                         // end zeigt jetzt auf begin der naechsten zeile
766                 
767                 for (c=begin; c!=end; ++c)
768                 {
769                                 // space am zeilenende skippen
770                         if ((c==last) && (c->flags&GS_ISSPACE))
771                                 continue;
772
773                         if (c->flags&GS_ISSPACE)
774                                 numspaces++;
775                         linelength+=c->w;
776                         num++;
777                 }
778
779                 if (!num)               // line mit nur einem space
780                         continue;
781
782                 switch (dir)
783                 {
784                 case dirRight:
785                 case dirCenter:
786                 {
787                         int offset=area.width()-linelength;
788                         if (dir==dirCenter)
789                                 offset/=2;
790                         offset+=area.left();
791                         while (begin != end)
792                         {
793                                 begin->bbox.moveBy(offset-begin->x,0);
794                                 begin->x=offset;
795                                 offset+=begin->w;
796                                 ++begin;
797                         }
798                         break;
799                 }
800                 case dirBlock:
801                 {
802                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
803                                 continue;
804                         int spacemode;
805                         if (numspaces)
806                                 spacemode=1;
807                         else
808                                 spacemode=0;
809                         if ((!spacemode) && (num<2))
810                                 break;
811                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
812                         int curoff=0;
813                         while (begin != end)
814                         {
815                                 int doadd=0;
816                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
817                                         doadd=1;
818                                 begin->x+=curoff>>8;
819                                 begin->bbox.moveBy(curoff>>8,0);
820                                 if (doadd)
821                                         curoff+=off;
822                                 ++begin;
823                         }
824                         break;
825                 }
826                 }
827         }
828         bboxValid=false;
829         calc_bbox();
830 }
831
832 void eTextPara::clear()
833 {
834         singleLock s(ftlock);
835
836         current_font = 0;
837         replacement_font = 0;
838
839         glyphs.clear();
840 }
841
842 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");