bigger linegap
[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)/64.0;
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         ng.bbox.setWidth(xadvance);
336
337         ng.x = cursor.x()+kern;
338         ng.y = cursor.y();
339         ng.w = xadvance;
340         ng.font = current_font;
341         ng.glyph_index = glyphIndex;
342         ng.flags = flags;
343         glyphs.push_back(ng);
344
345         cursor += ePoint(xadvance, 0);
346         previous = glyphIndex;
347         return 0;
348 }
349
350 void eTextPara::calc_bbox()
351 {
352         if (!glyphs.size())
353         {
354                 bboxValid = 0;
355                 boundBox = eRect();
356                 return;
357         }
358         
359         bboxValid = 1;
360
361         glyphString::iterator i(glyphs.begin());
362         
363         boundBox = i->bbox; 
364         ++i;
365
366         for (i ; i != glyphs.end(); ++i)
367         {
368                 if ( i->flags & GS_ISSPACE )
369                         continue;
370                 if ( i->bbox.left() < boundBox.left() )
371                         boundBox.setLeft( i->bbox.left() );
372                 if ( i->bbox.top() < boundBox.top() )
373                         boundBox.setTop( i->bbox.top() );
374                 if ( i->bbox.right() > boundBox.right() )
375                         boundBox.setRight( i->bbox.right() );
376                 if ( i->bbox.bottom() > boundBox.bottom() )
377                         boundBox.setBottom( i->bbox.bottom() );
378         }
379 //      eDebug("boundBox left = %i, top = %i, right = %i, bottom = %i", boundBox.left(), boundBox.top(), boundBox.right(), boundBox.bottom() );
380 }
381
382 void eTextPara::newLine(int flags)
383 {
384         if (maximum.width()<cursor.x())
385                 maximum.setWidth(cursor.x());
386         cursor.setX(left);
387         previous=0;
388         int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
389         cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)>>6);
390         if (maximum.height()<cursor.y())
391                 maximum.setHeight(cursor.y());
392         previous=0;
393 }
394
395 eTextPara::~eTextPara()
396 {
397         clear();
398 }
399
400 void eTextPara::setFont(const gFont *font)
401 {
402         ePtr<Font> fnt, replacement;
403         fontRenderClass::getInstance()->getFont(fnt, font->family.c_str(), font->pointSize);
404         if (!fnt)
405                 eWarning("FONT '%s' MISSING!", font->family.c_str());
406         fontRenderClass::getInstance()->getFont(replacement, replacement_facename.c_str(), font->pointSize);
407         setFont(fnt, replacement);
408 }
409
410 std::string eTextPara::replacement_facename;
411
412 void eTextPara::setFont(Font *fnt, Font *replacement)
413 {
414         if (!fnt)
415                 return;
416         current_font=fnt;
417         replacement_font=replacement;
418         singleLock s(ftlock);
419
420                         // we ask for replacment_font first becauseof the cache
421         if (replacement_font)
422         {
423                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, 
424                                 &replacement_font->font.font, &replacement_face, 
425                                 &replacement_font->size)<0)
426                 {
427                         eDebug("FTC_Manager_Lookup_Size failed!");
428                         return;
429                 }
430         }
431         if (current_font)
432         {
433                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
434                 {
435                         eDebug("FTC_Manager_Lookup_Size failed!");
436                         return;
437                 }
438         }
439         cache_current_font=&current_font->font.font;
440         previous=0;
441         use_kerning=FT_HAS_KERNING(current_face);
442 }
443
444 void
445 shape (std::vector<unsigned long> &string, const std::vector<unsigned long> &text);
446
447 int eTextPara::renderString(const std::string &string, int rflags)
448 {
449         singleLock s(ftlock);
450         
451         if (!current_font)
452                 return -1;
453                 
454         if (cursor.y()==-1)
455         {
456                 cursor=ePoint(area.x(), area.y()+(current_face->size->metrics.ascender>>6));
457                 left=cursor.x();
458         }
459                 
460         if (&current_font->font.font != cache_current_font)
461         {
462                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
463                 {
464                         eDebug("FTC_Manager_Lookup_Size failed!");
465                         return -1;
466                 }
467                 cache_current_font=&current_font->font.font;
468         }
469         
470         std::vector<unsigned long> uc_string, uc_visual;
471         uc_string.reserve(string.length());
472         
473         std::string::const_iterator p(string.begin());
474
475         while(p != string.end())
476         {
477                 unsigned int unicode=(unsigned char)*p++;
478
479                 if (unicode & 0x80) // we have (hopefully) UTF8 here, and we assume that the encoding is VALID
480                 {
481                         if ((unicode & 0xE0)==0xC0) // two bytes
482                         {
483                                 unicode&=0x1F;
484                                 unicode<<=6;
485                                 if (p != string.end())
486                                         unicode|=(*p++)&0x3F;
487                         } else if ((unicode & 0xF0)==0xE0) // three bytes
488                         {
489                                 unicode&=0x0F;
490                                 unicode<<=6;
491                                 if (p != string.end())
492                                         unicode|=(*p++)&0x3F;
493                                 unicode<<=6;
494                                 if (p != string.end())
495                                         unicode|=(*p++)&0x3F;
496                         } else if ((unicode & 0xF8)==0xF0) // four bytes
497                         {
498                                 unicode&=0x07;
499                                 unicode<<=6;
500                                 if (p != string.end())
501                                         unicode|=(*p++)&0x3F;
502                                 unicode<<=6;
503                                 if (p != string.end())
504                                         unicode|=(*p++)&0x3F;
505                                 unicode<<=6;
506                                 if (p != string.end())
507                                         unicode|=(*p++)&0x3F;
508                         }
509                 }
510                 uc_string.push_back(unicode);
511         }
512
513         std::vector<unsigned long> uc_shape;
514
515                 // character -> glyph conversion
516         shape(uc_shape, uc_string);
517         
518                 // now do the usual logical->visual reordering
519 #ifdef HAVE_FRIBIDI     
520         FriBidiCharType dir=FRIBIDI_TYPE_ON;
521         {
522                 int size=uc_shape.size();
523                 uc_visual.resize(size);
524                 // gaaanz lahm, aber anders geht das leider nicht, sorry.
525                 FriBidiChar array[size], target[size];
526                 std::copy(uc_shape.begin(), uc_shape.end(), array);
527                 fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
528                 uc_visual.assign(target, target+size);
529         }
530 #else
531         uc_visual=uc_shape;
532 #endif
533
534         glyphs.reserve(uc_visual.size());
535         
536         int nextflags = 0;
537         
538         for (std::vector<unsigned long>::const_iterator i(uc_visual.begin());
539                 i != uc_visual.end(); ++i)
540         {
541                 int isprintable=1;
542                 int flags = nextflags;
543                 nextflags = 0;
544                 if (!(rflags&RS_DIRECT))
545                 {
546                         switch (*i)
547                         {
548                         case '\\':
549                         {
550                                 unsigned long c = *(i+1);
551                                 switch (c)
552                                 {
553                                         case 'n':
554                                                 i++;
555                                                 goto newline;
556                                         case 't':
557                                                 i++;
558                                                 goto tab;
559                                         case 'r':
560                                                 i++;
561                                                 goto nprint;
562                                         default:
563                                         ;
564                                 }
565                                 break;
566                         }
567                         case '\t':
568 tab:            isprintable=0;
569                                 cursor+=ePoint(current_font->tabwidth, 0);
570                                 cursor-=ePoint(cursor.x()%current_font->tabwidth, 0);
571                                 break;
572                         case 0x8A:
573                         case 0xE08A:
574                         case '\n':
575 newline:isprintable=0;
576                                 newLine(rflags);
577                                 nextflags|=GS_ISFIRST;
578                                 break;
579                         case '\r':
580                         case 0x86: case 0xE086:
581                         case 0x87: case 0xE087:
582 nprint: isprintable=0;
583                                 break;
584                         case ' ':
585                                 flags|=GS_ISSPACE;
586                         default:
587                                 break;
588                         }
589                 }
590                 if (isprintable)
591                 {
592                         FT_UInt index;
593
594                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(current_face, *i);
595
596                         if (!index)
597                         {
598                                 if (replacement_face)
599                                         index=(rflags&RS_DIRECT)? *i : FT_Get_Char_Index(replacement_face, *i);
600
601                                 if (!index)
602                                         eDebug("unicode %d ('%c') not present", *i, *i);
603                                 else
604                                         appendGlyph(replacement_font, replacement_face, index, flags, rflags);
605                         } else
606                                 appendGlyph(current_font, current_face, index, flags, rflags);
607                 }
608         }
609         bboxValid=false;
610         calc_bbox();
611 #ifdef HAVE_FRIBIDI
612         if (dir & FRIBIDI_MASK_RTL)
613                 realign(dirRight);
614 #endif
615         return 0;
616 }
617
618 void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, const gRGB &foreground)
619 {
620         singleLock s(ftlock);
621         
622         if (!current_font)
623                 return;
624
625         if (&current_font->font.font != cache_current_font)
626         {
627                 if (FTC_Manager_Lookup_Size(fontRenderClass::instance->cacheManager, &current_font->font.font, &current_face, &current_font->size)<0)
628                 {
629                         eDebug("FTC_Manager_Lookup_Size failed!");
630                         return;
631                 }
632                 cache_current_font=&current_font->font.font;
633         }
634
635         ePtr<gPixmap> target;
636         dc.getPixmap(target);
637         gSurface *surface = target->surface;
638
639         register int opcode;
640
641         gColor *lookup8, lookup8_invert[16];
642         gColor *lookup8_normal=0;
643
644         __u32 lookup32_normal[16], lookup32_invert[16], *lookup32;
645         
646         if (surface->bpp == 8)
647         {
648                 if (surface->clut.data)
649                 {
650                         lookup8_normal=getColor(surface->clut, background, foreground).lookup;
651                         
652                         int i;
653                         for (i=0; i<16; ++i)
654                                 lookup8_invert[i] = lookup8_normal[i^0xF];
655                         
656                         opcode=0;
657                 } else
658                         opcode=1;
659         } else if (surface->bpp == 32)
660         {
661                 opcode=3;
662                 if (surface->clut.data)
663                 {
664                         lookup8=getColor(surface->clut, background, foreground).lookup;
665                         for (int i=0; i<16; ++i)
666                                 lookup32_normal[i]=((surface->clut.data[lookup8[i]].a<<24)|
667                                         (surface->clut.data[lookup8[i]].r<<16)|
668                                         (surface->clut.data[lookup8[i]].g<<8)|
669                                         (surface->clut.data[lookup8[i]].b))^0xFF000000;
670                 } else
671                 {
672                         for (int i=0; i<16; ++i)
673                                 lookup32_normal[i]=(0x010101*i)|0xFF000000;
674                 }
675                 for (int i=0; i<16; ++i)
676                         lookup32_invert[i]=lookup32_normal[i^0xF];
677         } else
678         {
679                 eWarning("can't render to %dbpp", surface->bpp);
680                 return;
681         }
682         
683         gRegion area(eRect(0, 0, surface->x, surface->y));
684         gRegion clip = dc.getClip() & area;
685
686         int buffer_stride=surface->stride;
687         
688         for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
689         {
690                 if (!(i->flags & GS_INVERT))
691                 {
692                         lookup8 = lookup8_normal;
693                         lookup32 = lookup32_normal;
694                 } else
695                 {
696                         lookup8 = lookup8_invert;
697                         lookup32 = lookup32_invert;
698                 }
699                 
700                 static FTC_SBit glyph_bitmap;
701                 if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
702                         continue;
703                 int rx=i->x+glyph_bitmap->left + offset.x();
704                 int ry=i->y-glyph_bitmap->top  + offset.y();
705                 
706                 __u8 *d=(__u8*)(surface->data)+buffer_stride*ry+rx*surface->bypp;
707                 __u8 *s=glyph_bitmap->buffer;
708                 register int sx=glyph_bitmap->width;
709                 int sy=glyph_bitmap->height;
710                 if ((sy+ry) >= clip.extends.bottom())
711                         sy=clip.extends.bottom()-ry;
712                 if ((sx+rx) >= clip.extends.right())
713                         sx=clip.extends.right()-rx;
714                 if (rx < clip.extends.left())
715                 {
716                         int diff=clip.extends.left()-rx;
717                         s+=diff;
718                         sx-=diff;
719                         rx+=diff;
720                         d+=diff*surface->bypp;
721                 }
722                 if (ry < clip.extends.top())
723                 {
724                         int diff=clip.extends.top()-ry;
725                         s+=diff*glyph_bitmap->pitch;
726                         sy-=diff;
727                         ry+=diff;
728                         d+=diff*buffer_stride;
729                 }
730                 if (sx>0)
731                         for (int ay=0; ay<sy; ay++)
732                         {
733                                 if (!opcode)            // 4bit lookup to 8bit
734                                 {
735                                         register __u8 *td=d;
736                                         register int ax;
737                                         
738                                         for (ax=0; ax<sx; ax++)
739                                         {       
740                                                 register int b=(*s++)>>4;
741                                                 if(b)
742                                                         *td++=lookup8[b];
743                                                 else
744                                                         td++;
745                                         }
746                                 } else if (opcode == 1) // 8bit direct
747                                 {
748                                         register __u8 *td=d;
749                                         register int ax;
750                                         for (ax=0; ax<sx; ax++)
751                                         {       
752                                                 register int b=*s++;
753                                                 *td++^=b;
754                                         }
755                                 } else
756                                 {
757                                         register __u32 *td=(__u32*)d;
758                                         register int ax;
759                                         for (ax=0; ax<sx; ax++)
760                                         {       
761                                                 register int b=(*s++)>>4;
762                                                 if(b)
763                                                         *td++=lookup32[b];
764                                                 else
765                                                         td++;
766                                         }
767                                 }
768                                 s+=glyph_bitmap->pitch-sx;
769                                 d+=buffer_stride;
770                         }
771         }
772 }
773
774 void eTextPara::realign(int dir)        // der code hier ist ein wenig merkwuerdig.
775 {
776         glyphString::iterator begin(glyphs.begin()), c(glyphs.begin()), end(glyphs.begin()), last;
777         if (dir==dirLeft)
778                 return;
779         while (c != glyphs.end())
780         {
781                 int linelength=0;
782                 int numspaces=0, num=0;
783                 begin=end;
784                 
785                 ASSERT( end != glyphs.end());
786                 
787                         // zeilenende suchen
788                 do {
789                         last=end;
790                         ++end;
791                 } while ((end != glyphs.end()) && (!(end->flags&GS_ISFIRST)));
792                         // end zeigt jetzt auf begin der naechsten zeile
793                 
794                 for (c=begin; c!=end; ++c)
795                 {
796                                 // space am zeilenende skippen
797                         if ((c==last) && (c->flags&GS_ISSPACE))
798                                 continue;
799
800                         if (c->flags&GS_ISSPACE)
801                                 numspaces++;
802                         linelength+=c->w;
803                         num++;
804                 }
805
806                 if (!num)               // line mit nur einem space
807                         continue;
808
809                 switch (dir)
810                 {
811                 case dirRight:
812                 case dirCenter:
813                 {
814                         int offset=area.width()-linelength;
815                         if (dir==dirCenter)
816                                 offset/=2;
817                         offset+=area.left();
818                         while (begin != end)
819                         {
820                                 begin->bbox.moveBy(offset-begin->x,0);
821                                 begin->x=offset;
822                                 offset+=begin->w;
823                                 ++begin;
824                         }
825                         break;
826                 }
827                 case dirBlock:
828                 {
829                         if (end == glyphs.end())                // letzte zeile linksbuendig lassen
830                                 continue;
831                         int spacemode;
832                         if (numspaces)
833                                 spacemode=1;
834                         else
835                                 spacemode=0;
836                         if ((!spacemode) && (num<2))
837                                 break;
838                         int off=(area.width()-linelength)*256/(spacemode?numspaces:(num-1));
839                         int curoff=0;
840                         while (begin != end)
841                         {
842                                 int doadd=0;
843                                 if ((!spacemode) || (begin->flags&GS_ISSPACE))
844                                         doadd=1;
845                                 begin->x+=curoff>>8;
846                                 begin->bbox.moveBy(curoff>>8,0);
847                                 if (doadd)
848                                         curoff+=off;
849                                 ++begin;
850                         }
851                         break;
852                 }
853                 }
854         }
855         bboxValid=false;
856         calc_bbox();
857 }
858
859 void eTextPara::clear()
860 {
861         singleLock s(ftlock);
862
863         current_font = 0;
864         replacement_font = 0;
865
866         glyphs.clear();
867 }
868
869 eAutoInitP0<fontRenderClass> init_fontRenderClass(eAutoInitNumbers::graphic-1, "Font Render Class");