synfig-core/tags/synfig_0_61_07_rc3/src/modules/lyr_freetype/lyr_freetype.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file lyr_freetype.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2006 Paul Wise
  10 **      Copyright (c) 2007 Chris Moore
  11 **
  12 **      This package is free software; you can redistribute it and/or
  13 **      modify it under the terms of the GNU General Public License as
  14 **      published by the Free Software Foundation; either version 2 of
  15 **      the License, or (at your option) any later version.
  16 **
  17 **      This package is distributed in the hope that it will be useful,
  18 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20 **      General Public License for more details.
  21 **      \endlegal
  22 **
  23 ** === N O T E S ===========================================================
  24 **
  25 ** ========================================================================= */
  26
  27 /* === H E A D E R S ======================================================= */
  28
  29 #define SYNFIG_LAYER
  30
  31 #ifdef USING_PCH
  32 #       include "pch.h"
  33 #else
  34 #ifdef HAVE_CONFIG_H
  35 #       include <config.h>
  36 #endif
  37 #ifdef WITH_FONTCONFIG
  38 #include <fontconfig/fontconfig.h>
  39 #endif
  40
  41 #include "lyr_freetype.h"
  42
  43
  44 #endif
  45
  46 using namespace std;
  47 using namespace etl;
  48 using namespace synfig;
  49
  50 /* === M A C R O S ========================================================= */
  51
  52 #define MAX_GLYPHS              2000
  53
  54 #define PANGO_STYLE_NORMAL (0)
  55 #define PANGO_STYLE_OBLIQUE (1)
  56 #define PANGO_STYLE_ITALIC (2)
  57
  58
  59 #define WEIGHT_NORMAL (400)
  60 #define WEIGHT_BOLD (700)
  61
  62 /* === G L O B A L S ======================================================= */
  63
  64 SYNFIG_LAYER_INIT(Layer_Freetype);
  65 SYNFIG_LAYER_SET_NAME(Layer_Freetype,"text");
  66 SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Freetype,_("Text"));
  67 SYNFIG_LAYER_SET_CATEGORY(Layer_Freetype,_("Other"));
  68 SYNFIG_LAYER_SET_VERSION(Layer_Freetype,"0.2");
  69 SYNFIG_LAYER_SET_CVS_ID(Layer_Freetype,"$Id$");
  70
  71 /* === P R O C E D U R E S ================================================= */
  72
  73 /*Glyph::~Glyph()
  74 {
  75         if(glyph)FT_Done_Glyph(glyph);
  76 }
  77 */
  78 void
  79 TextLine::clear_and_free()
  80 {
  81         std::vector<Glyph>::iterator iter;
  82         for(iter=glyph_table.begin();iter!=glyph_table.end();++iter)
  83         {
  84                 if(iter->glyph)FT_Done_Glyph(iter->glyph);
  85                 iter->glyph=0;
  86         }
  87         glyph_table.clear();
  88 }
  89
  90 /* === M E T H O D S ======================================================= */
  91
  92 Layer_Freetype::Layer_Freetype()
  93 {
  94         face=0;
  95
  96         size=Vector(0.25,0.25);
  97         text=_("Text Layer");
  98         color=Color::black();
  99         pos=Vector(0,0);
 100         orient=Vector(0.5,0.5);
 101         compress=1.0;
 102         vcompress=1.0;
 103         weight=WEIGHT_NORMAL;
 104         style=PANGO_STYLE_NORMAL;
 105         family="Sans Serif";
 106         use_kerning=true;
 107         grid_fit=false;
 108         old_version=false;
 109         set_blend_method(Color::BLEND_COMPOSITE);
 110         needs_sync_=true;
 111
 112         new_font(family,style,weight);
 113
 114         invert=false;
 115 }
 116
 117 Layer_Freetype::~Layer_Freetype()
 118 {
 119         if(face)
 120                 FT_Done_Face(face);
 121 }
 122
 123 void
 124 Layer_Freetype::new_font(const synfig::String &family, int style, int weight)
 125 {
 126         if(
 127                 !new_font_(family,style,weight) &&
 128                 !new_font_(family,style,WEIGHT_NORMAL) &&
 129                 !new_font_(family,PANGO_STYLE_NORMAL,weight) &&
 130                 !new_font_(family,PANGO_STYLE_NORMAL,WEIGHT_NORMAL) &&
 131                 !new_font_("sans serif",style,weight) &&
 132                 !new_font_("sans serif",style,WEIGHT_NORMAL) &&
 133                 !new_font_("sans serif",PANGO_STYLE_NORMAL,weight)
 134         )
 135                 new_font_("sans serif",PANGO_STYLE_NORMAL,WEIGHT_NORMAL);
 136 }
 137
 138 bool
 139 Layer_Freetype::new_font_(const synfig::String &font_fam_, int style, int weight)
 140 {
 141         synfig::String font_fam(font_fam_);
 142
 143         if(new_face(font_fam_))
 144                 return true;
 145
 146         //start evil hack
 147         for(unsigned int i=0;i<font_fam.size();i++)font_fam[i]=tolower(font_fam[i]);
 148         //end evil hack
 149
 150         if(font_fam=="arial black")
 151 #ifndef __APPLE__
 152         if(new_face("ariblk"))
 153                         return true;
 154                 else
 155 #endif
 156                 font_fam="sans serif";
 157
 158         if(font_fam=="sans serif" || font_fam=="arial")
 159         {
 160                 String arial("arial");
 161                 if(weight>WEIGHT_NORMAL)
 162                         arial+='b';
 163                 if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
 164                         arial+='i';
 165                 else
 166                         if(weight>WEIGHT_NORMAL) arial+='d';
 167
 168                 if(new_face(arial))
 169                         return true;
 170 #ifdef __APPLE__
 171                 if(new_face("Helvetica RO"))
 172                         return true;
 173 #endif
 174         }
 175
 176         if(font_fam=="comic" || font_fam=="comic sans")
 177         {
 178                 String filename("comic");
 179                 if(weight>WEIGHT_NORMAL)
 180                         filename+='b';
 181                 if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
 182                         filename+='i';
 183                 else if(weight>WEIGHT_NORMAL) filename+='d';
 184
 185                 if(new_face(filename))
 186                         return true;
 187         }
 188
 189         if(font_fam=="courier" || font_fam=="courier new")
 190         {
 191                 String filename("cour");
 192                 if(weight>WEIGHT_NORMAL)
 193                         filename+='b';
 194                 if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
 195                         filename+='i';
 196                 else if(weight>WEIGHT_NORMAL) filename+='d';
 197
 198                 if(new_face(filename))
 199                         return true;
 200         }
 201
 202         if(font_fam=="serif" || font_fam=="times" || font_fam=="times new roman")
 203         {
 204                 String filename("times");
 205                 if(weight>WEIGHT_NORMAL)
 206                         filename+='b';
 207                 if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
 208                         filename+='i';
 209                 else if(weight>WEIGHT_NORMAL) filename+='d';
 210
 211                 if(new_face(filename))
 212                         return true;
 213         }
 214
 215         if(font_fam=="trebuchet")
 216         {
 217                 String filename("trebuc");
 218                 if(weight>WEIGHT_NORMAL)
 219                         filename+='b';
 220                 if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
 221                 {
 222                         filename+='i';
 223                         if(weight<=WEIGHT_NORMAL) filename+='t';
 224                 }
 225                 else if(weight>WEIGHT_NORMAL) filename+='d';
 226
 227                 if(new_face(filename))
 228                         return true;
 229         }
 230
 231
 232         if(font_fam=="sans serif" || font_fam=="luxi sans")
 233         {
 234                 {
 235                         String luxi("luxis");
 236                         if(weight>WEIGHT_NORMAL)
 237                                 luxi+='b';
 238                         else
 239                                 luxi+='r';
 240                         if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
 241                                 luxi+='i';
 242
 243
 244                         if(new_face(luxi))
 245                                 return true;
 246                 }
 247                 if(new_face("arial"))
 248                         return true;
 249                 if(new_face("Arial"))
 250                         return true;
 251         }
 252         if(font_fam=="serif" || font_fam=="times" || font_fam=="times new roman" || font_fam=="luxi serif")
 253         {
 254                 {
 255                         String luxi("luxir");
 256                         if(weight>WEIGHT_NORMAL)
 257                                 luxi+='b';
 258                         else
 259                                 luxi+='r';
 260                         if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
 261                                 luxi+='i';
 262
 263                         if(new_face(luxi))
 264                                 return true;
 265                 }
 266                 if(new_face("Times New Roman"))
 267                         return true;
 268                 if(new_face("Times"))
 269                         return true;
 270         }
 271         if(font_fam=="luxi")
 272         {
 273                 {
 274                         String luxi("luxim");
 275                         if(weight>WEIGHT_NORMAL)
 276                                 luxi+='b';
 277                         else
 278                                 luxi+='r';
 279                         if(style==PANGO_STYLE_ITALIC||style==PANGO_STYLE_OBLIQUE)
 280                                 luxi+='i';
 281
 282                         if(new_face(luxi))
 283                                 return true;
 284                 }
 285
 286                 if(new_face("Times New Roman"))
 287                         return true;
 288                 if(new_face("Times"))
 289                         return true;
 290         }
 291
 292         return new_face(font_fam_) || new_face(font_fam);
 293
 294         return false;
 295 }
 296
 297 #ifdef USE_MAC_FT_FUNCS
 298 void fss2path(char *path, FSSpec *fss)
 299 {
 300   int l;             //fss->name contains name of last item in path
 301   for(l=0; l<(fss->name[0]); l++) path[l] = fss->name[l + 1];
 302   path[l] = 0;
 303
 304   if(fss->parID != fsRtParID) //path is more than just a volume name
 305   {
 306     int i, len;
 307     CInfoPBRec pb;
 308
 309     pb.dirInfo.ioNamePtr = fss->name;
 310     pb.dirInfo.ioVRefNum = fss->vRefNum;
 311     pb.dirInfo.ioDrParID = fss->parID;
 312     do
 313     {
 314       pb.dirInfo.ioFDirIndex = -1;  //get parent directory name
 315       pb.dirInfo.ioDrDirID = pb.dirInfo.ioDrParID;
 316       if(PBGetCatInfoSync(&pb) != noErr) break;
 317
 318       len = fss->name[0] + 1;
 319       for(i=l; i>=0;  i--) path[i + len] = path[i];
 320       for(i=1; i<len; i++) path[i - 1] = fss->name[i]; //add to start of path
 321       path[i - 1] = ':';
 322       l += len;
 323 } while(pb.dirInfo.ioDrDirID != fsRtDirID); //while more directory levels
 324   }
 325 }
 326 #endif
 327
 328 bool
 329 Layer_Freetype::new_face(const String &newfont)
 330 {
 331         int error;
 332         FT_Long face_index=0;
 333
 334         // If we are already loaded, don't bother reloading.
 335         if(face && font==newfont)
 336                 return true;
 337
 338         if(face)
 339         {
 340                 FT_Done_Face(face);
 341                 face=0;
 342         }
 343
 344         error=FT_New_Face(ft_library,newfont.c_str(),face_index,&face);
 345         if(error)error=FT_New_Face(ft_library,(newfont+".ttf").c_str(),face_index,&face);
 346
 347         if(get_canvas())
 348         {
 349                 if(error)error=FT_New_Face(ft_library,(get_canvas()->get_file_path()+ETL_DIRECTORY_SEPARATOR+newfont).c_str(),face_index,&face);
 350                 if(error)error=FT_New_Face(ft_library,(get_canvas()->get_file_path()+ETL_DIRECTORY_SEPARATOR+newfont+".ttf").c_str(),face_index,&face);
 351         }
 352
 353 #ifdef USE_MAC_FT_FUNCS
 354         if(error)
 355         {
 356                 FSSpec fs_spec;
 357                 error=FT_GetFile_From_Mac_Name(newfont.c_str(),&fs_spec,&face_index);
 358                 if(!error)
 359                 {
 360                         char filename[512];
 361                         fss2path(filename,&fs_spec);
 362                         //FSSpecToNativePathName(fs_spec,filename,sizeof(filename)-1, 0);
 363
 364                         error=FT_New_Face(ft_library, filename, face_index,&face);
 365                         //error=FT_New_Face_From_FSSpec(ft_library, &fs_spec, face_index,&face);
 366                         synfig::info(__FILE__":%d: \"%s\" (%s) -- ft_error=%d",__LINE__,newfont.c_str(),filename,error);
 367                 }
 368                 else
 369                 {
 370                         synfig::info(__FILE__":%d: \"%s\" -- ft_error=%d",__LINE__,newfont.c_str(),error);
 371                         // Unable to generate fs_spec
 372                 }
 373
 374         }
 375 #endif
 376
 377 #ifdef WITH_FONTCONFIG
 378         if(error)
 379         {
 380                 FcFontSet *fs;
 381                 FcResult result;
 382                 if( !FcInit() )
 383                 {
 384                         synfig::warning("Layer_Freetype: fontconfig: %s",_("unable to initialise"));
 385                         error = 1;
 386                 } else {
 387                         FcPattern* pat = FcNameParse((FcChar8 *) newfont.c_str());
 388                         FcConfigSubstitute(0, pat, FcMatchPattern);
 389                         FcDefaultSubstitute(pat);
 390                         FcPattern *match;
 391                         fs = FcFontSetCreate();
 392                         match = FcFontMatch(0, pat, &result);
 393                         if (match)
 394                                 FcFontSetAdd(fs, match);
 395                         if (pat)
 396                                 FcPatternDestroy(pat);
 397                         if(fs){
 398                                 FcChar8* file;
 399                                 if( FcPatternGetString (fs->fonts[0], FC_FILE, 0, &file) == FcResultMatch )
 400                                         error=FT_New_Face(ft_library,(const char*)file,face_index,&face);
 401                                 FcFontSetDestroy(fs);
 402                         } else
 403                                 synfig::warning("Layer_Freetype: fontconfig: %s",_("empty font set"));
 404                 }
 405         }
 406 #endif
 407
 408 #ifdef WIN32
 409         if(error)error=FT_New_Face(ft_library,("C:\\WINDOWS\\FONTS\\"+newfont).c_str(),face_index,&face);
 410         if(error)error=FT_New_Face(ft_library,("C:\\WINDOWS\\FONTS\\"+newfont+".ttf").c_str(),face_index,&face);
 411 #else
 412
 413 #ifdef __APPLE__
 414         if(error)error=FT_New_Face(ft_library,("~/Library/Fonts/"+newfont).c_str(),face_index,&face);
 415         if(error)error=FT_New_Face(ft_library,("~/Library/Fonts/"+newfont+".ttf").c_str(),face_index,&face);
 416         if(error)error=FT_New_Face(ft_library,("~/Library/Fonts/"+newfont+".dfont").c_str(),face_index,&face);
 417
 418         if(error)error=FT_New_Face(ft_library,("/Library/Fonts/"+newfont).c_str(),face_index,&face);
 419         if(error)error=FT_New_Face(ft_library,("/Library/Fonts/"+newfont+".ttf").c_str(),face_index,&face);
 420         if(error)error=FT_New_Face(ft_library,("/Library/Fonts/"+newfont+".dfont").c_str(),face_index,&face);
 421 #endif
 422
 423         if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/type1/"+newfont).c_str(),face_index,&face);
 424         if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/type1/"+newfont+".ttf").c_str(),face_index,&face);
 425
 426         if(error)error=FT_New_Face(ft_library,("/usr/share/fonts/truetype/"+newfont).c_str(),face_index,&face);
 427         if(error)error=FT_New_Face(ft_library,("/usr/share/fonts/truetype/"+newfont+".ttf").c_str(),face_index,&face);
 428
 429         if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/TTF/"+newfont).c_str(),face_index,&face);
 430         if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/TTF/"+newfont+".ttf").c_str(),face_index,&face);
 431
 432         if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/truetype/"+newfont).c_str(),face_index,&face);
 433         if(error)error=FT_New_Face(ft_library,("/usr/X11R6/lib/X11/fonts/truetype/"+newfont+".ttf").c_str(),face_index,&face);
 434
 435 #endif
 436         if(error)
 437         {
 438                 //synfig::error(strprintf("Layer_Freetype:%s (err=%d)",_("Unable to open face."),error));
 439                 return false;
 440         }
 441
 442         font=newfont;
 443
 444         needs_sync_=true;
 445         return true;
 446 }
 447
 448 bool
 449 Layer_Freetype::set_param(const String & param, const ValueBase &value)
 450 {
 451         Mutex::Lock lock(mutex);
 452 /*
 453         if(param=="font" && value.same_type_as(font))
 454         {
 455                 new_font(etl::basename(value.get(font)),style,weight);
 456                 family=etl::basename(value.get(font));
 457                 return true;
 458         }
 459 */
 460         IMPORT_PLUS(family,new_font(family,style,weight));
 461         IMPORT_PLUS(weight,new_font(family,style,weight));
 462         IMPORT_PLUS(style,new_font(family,style,weight));
 463         IMPORT_PLUS(size, if(old_version){size/=2.0;} needs_sync_=true );
 464         IMPORT_PLUS(text,needs_sync_=true);
 465         IMPORT_PLUS(pos,needs_sync_=true);
 466         IMPORT(color);
 467         IMPORT(invert);
 468         IMPORT_PLUS(orient,needs_sync_=true);
 469         IMPORT_PLUS(compress,needs_sync_=true);
 470         IMPORT_PLUS(vcompress,needs_sync_=true);
 471         IMPORT_PLUS(use_kerning,needs_sync_=true);
 472         IMPORT_PLUS(grid_fit,needs_sync_=true);
 473
 474         return Layer_Composite::set_param(param,value);
 475 }
 476
 477 ValueBase
 478 Layer_Freetype::get_param(const String& param)const
 479 {
 480         EXPORT(font);
 481         EXPORT(family);
 482         EXPORT(style);
 483         EXPORT(weight);
 484         EXPORT(size);
 485         EXPORT(text);
 486         EXPORT(color);
 487         EXPORT(pos);
 488         EXPORT(orient);
 489         EXPORT(compress);
 490         EXPORT(vcompress);
 491         EXPORT(use_kerning);
 492         EXPORT(grid_fit);
 493         EXPORT(invert);
 494
 495         EXPORT_NAME();
 496         EXPORT_VERSION();
 497
 498         return Layer_Composite::get_param(param);
 499 }
 500
 501 Layer::Vocab
 502 Layer_Freetype::get_param_vocab(void)const
 503 {
 504         Layer::Vocab ret(Layer_Composite::get_param_vocab());
 505
 506         ret.push_back(ParamDesc("text")
 507                 .set_local_name(_("Text"))
 508                 .set_description(_("Text to Render"))
 509                 .set_hint("paragraph")
 510         );
 511
 512         ret.push_back(ParamDesc("color")
 513                 .set_local_name(_("Color"))
 514                 .set_description(_("Color of the text"))
 515         );
 516
 517         ret.push_back(ParamDesc("family")
 518                 .set_local_name(_("Font Family"))
 519                 .set_hint("font_family")
 520         );
 521
 522         ret.push_back(ParamDesc("style")
 523                 .set_local_name(_("Style"))
 524                 .set_hint("enum")
 525                 .add_enum_value(PANGO_STYLE_NORMAL, "normal" ,_("Normal"))
 526                 .add_enum_value(PANGO_STYLE_OBLIQUE, "oblique" ,_("Oblique"))
 527                 .add_enum_value(PANGO_STYLE_ITALIC, "italic" ,_("Italic"))
 528         );
 529
 530         ret.push_back(ParamDesc("weight")
 531                 .set_local_name(_("Weight"))
 532                 .set_hint("enum")
 533                 .add_enum_value(200, "ultralight" ,_("Ultralight"))
 534                 .add_enum_value(300, "light" ,_("light"))
 535                 .add_enum_value(400, "normal" ,_("Normal"))
 536                 .add_enum_value(700, "bold" ,_("Bold"))
 537                 .add_enum_value(800, "ultrabold" ,_("Ultrabold"))
 538                 .add_enum_value(900, "heavy" ,_("Heavy"))
 539         );
 540         ret.push_back(ParamDesc("compress")
 541                 .set_local_name(_("Horizontal Spacing"))
 542                 .set_description(_("Describes how close glyphs are horizontally"))
 543         );
 544
 545         ret.push_back(ParamDesc("vcompress")
 546                 .set_local_name(_("Vertical Spacing"))
 547                 .set_description(_("Describes how close lines of text are vertically"))
 548         );
 549
 550         ret.push_back(ParamDesc("size")
 551                 .set_local_name(_("Size"))
 552                 .set_description(_("Size of the text"))
 553                 .set_hint("size")
 554                 .set_origin("pos")
 555                 .set_scalar(1)
 556         );
 557
 558         ret.push_back(ParamDesc("orient")
 559                 .set_local_name(_("Orientation"))
 560                 .set_description(_("Text Orientation"))
 561                 .set_invisible_duck()
 562         );
 563
 564         ret.push_back(ParamDesc("pos")
 565                 .set_local_name(_("Position"))
 566                 .set_description(_("Text Position"))
 567         );
 568
 569         ret.push_back(ParamDesc("font")
 570                 .set_local_name(_("Font"))
 571                 .set_description(_("Filename of the font to use"))
 572                 .set_hint("filename")
 573                 .not_critical()
 574                 .hidden()
 575         );
 576
 577         ret.push_back(ParamDesc("use_kerning")
 578                 .set_local_name(_("Kerning"))
 579                 .set_description(_("Enables/Disables font kerning (If the font supports it)"))
 580         );
 581
 582         ret.push_back(ParamDesc("grid_fit")
 583                 .set_local_name(_("Sharpen Edges"))
 584                 .set_description(_("Turn this off if you are going to be animating the text"))
 585         );
 586         ret.push_back(ParamDesc("invert")
 587                 .set_local_name(_("Invert"))
 588         );
 589         return ret;
 590 }
 591
 592 void
 593 Layer_Freetype::sync()
 594 {
 595         needs_sync_=false;
 596
 597
 598
 599
 600 }
 601
 602 Color
 603 Layer_Freetype::get_color(Context context, const synfig::Point &pos)const
 604 {
 605         if(needs_sync_)
 606                 const_cast<Layer_Freetype*>(this)->sync();
 607
 608         if(!face)
 609                 return context.get_color(pos);
 610         return context.get_color(pos);
 611 }
 612
 613 bool
 614 Layer_Freetype::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 615 {
 616         static synfig::RecMutex freetype_mutex;
 617
 618         if(needs_sync_)
 619                 const_cast<Layer_Freetype*>(this)->sync();
 620
 621
 622
 623
 624         int error;
 625         Vector size(Layer_Freetype::size*2);
 626
 627         if(!context.accelerated_render(surface,quality,renddesc,cb))
 628                 return false;
 629
 630         if(is_disabled() || text.empty())
 631                 return true;
 632
 633         // If there is no font loaded, just bail
 634         if(!face)
 635         {
 636                 if(cb)cb->warning(string("Layer_Freetype:")+_("No face loaded, no text will be rendered."));
 637                 return true;
 638         }
 639
 640         String text(Layer_Freetype::text);
 641         if(text=="@_FILENAME_@" && get_canvas() && !get_canvas()->get_file_name().empty())
 642         {
 643                 text=basename(get_canvas()->get_file_name());
 644         }
 645
 646         // Width and Height of a pixel
 647         Vector::value_type pw=renddesc.get_w()/(renddesc.get_br()[0]-renddesc.get_tl()[0]);
 648         Vector::value_type ph=renddesc.get_h()/(renddesc.get_br()[1]-renddesc.get_tl()[1]);
 649
 650     // Calculate character width and height
 651         int w=abs(round_to_int(size[0]*pw));
 652         int h=abs(round_to_int(size[1]*ph));
 653
 654     //int bx=(int)((pos[0]-renddesc.get_tl()[0])*pw*64+0.5);
 655     //int by=(int)((pos[1]-renddesc.get_tl()[1])*ph*64+0.5);
 656     int bx=0;
 657     int by=0;
 658
 659     // If the font is the size of a pixel, don't bother rendering any text
 660         if(w<=1 || h<=1)
 661         {
 662                 if(cb)cb->warning(string("Layer_Freetype:")+_("Text too small, no text will be rendered."));
 663                 return true;
 664         }
 665
 666         synfig::RecMutex::Lock lock(freetype_mutex);
 667
 668 #define CHAR_RESOLUTION         (64)
 669         error = FT_Set_Char_Size(
 670                 face,                                           // handle to face object
 671                 (int)CHAR_RESOLUTION,   // char_width in 1/64th of points
 672                 (int)CHAR_RESOLUTION,   // char_height in 1/64th of points
 673                 round_to_int(abs(size[0]*pw*CHAR_RESOLUTION)),                                          // horizontal device resolution
 674                 round_to_int(abs(size[1]*ph*CHAR_RESOLUTION)) );                                                // vertical device resolution
 675
 676         // Here is where we can compensate for the
 677         // error in freetype's rendering engine.
 678         const float xerror(abs(size[0]*pw)/(float)face->size->metrics.x_ppem/1.13f/0.996);
 679         const float yerror(abs(size[1]*ph)/(float)face->size->metrics.y_ppem/1.13f/0.996);
 680         //synfig::info("xerror=%f, yerror=%f",xerror,yerror);
 681         const float compress(Layer_Freetype::compress*xerror);
 682         const float vcompress(Layer_Freetype::vcompress*yerror);
 683
 684         if(error)
 685         {
 686                 if(cb)cb->warning(string("Layer_Freetype:")+_("Unable to set face size.")+strprintf(" (err=%d)",error));
 687         }
 688
 689         FT_GlyphSlot  slot = face->glyph;  // a small shortcut
 690         FT_UInt       glyph_index(0);
 691         FT_UInt       previous(0);
 692         int u,v;
 693
 694         std::list<TextLine> lines;
 695
 696         /*
 697  --     ** -- CREATE GLYPHS -------------------------------------------------------
 698         */
 699
 700         lines.push_front(TextLine());
 701         string::const_iterator iter;
 702         for (iter=text.begin(); iter!=text.end(); ++iter)
 703         {
 704                 int multiplier(1);
 705                 if(*iter=='\n')
 706                 {
 707                         lines.push_front(TextLine());
 708                         bx=0;
 709                         by=0;
 710                         previous=0;
 711                         continue;
 712                 }
 713                 if(*iter=='\t')
 714                 {
 715                         multiplier=8;
 716                         glyph_index = FT_Get_Char_Index( face, ' ' );
 717                 }
 718                 else
 719                         glyph_index = FT_Get_Char_Index( face, *iter );
 720
 721         // retrieve kerning distance and move pen position
 722                 if ( FT_HAS_KERNING(face) && use_kerning && previous && glyph_index )
 723                 {
 724                         FT_Vector  delta;
 725
 726                         if(grid_fit)
 727                                 FT_Get_Kerning( face, previous, glyph_index, ft_kerning_default, &delta );
 728                         else
 729                                 FT_Get_Kerning( face, previous, glyph_index, ft_kerning_unfitted, &delta );
 730
 731                         if(compress<1.0f)
 732                         {
 733                                 bx += round_to_int(delta.x*compress);
 734                                 by += round_to_int(delta.y*compress);
 735                         }
 736                         else
 737                         {
 738                                 bx += delta.x;
 739                                 by += delta.y;
 740                         }
 741         }
 742
 743                 Glyph curr_glyph;
 744
 745         // store current pen position
 746         curr_glyph.pos.x = bx;
 747         curr_glyph.pos.y = by;
 748
 749         // load glyph image into the slot. DO NOT RENDER IT !!
 750         if(grid_fit)
 751                         error = FT_Load_Glyph( face, glyph_index, FT_LOAD_DEFAULT);
 752                 else
 753                         error = FT_Load_Glyph( face, glyph_index, FT_LOAD_DEFAULT|FT_LOAD_NO_HINTING );
 754         if (error) continue;  // ignore errors, jump to next glyph
 755
 756         // extract glyph image and store it in our table
 757         error = FT_Get_Glyph( face->glyph, &curr_glyph.glyph );
 758         if (error) continue;  // ignore errors, jump to next glyph
 759
 760         // record current glyph index
 761         previous = glyph_index;
 762
 763                 // Update the line width
 764                 lines.front().width=bx+slot->advance.x;
 765
 766                 // increment pen position
 767                 if(multiplier>1)
 768                         bx += round_to_int(slot->advance.x*multiplier*compress)-bx%round_to_int(slot->advance.x*multiplier*compress);
 769                 else
 770                         bx += round_to_int(slot->advance.x*compress*multiplier);
 771
 772                 //bx += round_to_int(slot->advance.x*compress*multiplier);
 773                 //by += round_to_int(slot->advance.y*compress);
 774                 by += slot->advance.y*multiplier;
 775
 776                 lines.front().glyph_table.push_back(curr_glyph);
 777
 778         }
 779
 780
 781         //float string_height;
 782         //string_height=(((lines.size()-1)*face->size->metrics.height+lines.back().actual_height()));
 783
 784         //int string_height=face->size->metrics.ascender;
 785 //#define METRICS_SCALE_ONE             (65536.0f)
 786 #define METRICS_SCALE_ONE               ((float)(1<<16))
 787
 788         float line_height;
 789         line_height=vcompress*((float)face->height*(((float)face->size->metrics.y_scale/METRICS_SCALE_ONE)));
 790
 791         int     string_height;
 792         string_height=round_to_int(((lines.size()-1)*line_height+lines.back().actual_height()));
 793         //synfig::info("string_height=%d",string_height);
 794         //synfig::info("line_height=%f",line_height);
 795
 796         /*
 797  --     ** -- RENDER THE GLYPHS ---------------------------------------------------
 798         */
 799
 800         Surface src_;
 801         Surface *src_surface;
 802
 803         src_surface=surface;
 804
 805         if(invert)
 806         {
 807                 src_=*surface;
 808                 Surface::alpha_pen pen(surface->begin(),get_amount(),get_blend_method());
 809
 810                 surface->fill(color,pen,src_.get_w(),src_.get_h());
 811
 812                 src_surface=&src_;
 813         }
 814
 815         {
 816         std::list<TextLine>::iterator iter;
 817         int curr_line;
 818         for(curr_line=0,iter=lines.begin();iter!=lines.end();++iter,curr_line++)
 819         {
 820                 bx=round_to_int((pos[0]-renddesc.get_tl()[0])*pw*CHAR_RESOLUTION-orient[0]*iter->width);
 821                 by=round_to_int((pos[1]-renddesc.get_tl()[1])*ph*CHAR_RESOLUTION+(1.0-orient[1])*string_height-line_height*curr_line);
 822                 //by=round_to_int(vcompress*((pos[1]-renddesc.get_tl()[1])*ph*64+(1.0-orient[1])*string_height-face->size->metrics.height*curr_line));
 823                 //synfig::info("curr_line=%d, bx=%d, by=%d",curr_line,bx,by);
 824
 825                 std::vector<Glyph>::iterator iter2;
 826                 for(iter2=iter->glyph_table.begin();iter2!=iter->glyph_table.end();++iter2)
 827                 {
 828                         FT_Glyph  image(iter2->glyph);
 829                         FT_Vector pen;
 830                         FT_BitmapGlyph  bit;
 831
 832                         pen.x = bx + iter2->pos.x;
 833                         pen.y = by + iter2->pos.y;
 834
 835                         //synfig::info("GLYPH: pen.x=%d, pen,y=%d",curr_line,(pen.x+32)>>6,(pen.y+32)>>6);
 836
 837                         error = FT_Glyph_To_Bitmap( &image, ft_render_mode_normal,0/*&pen*/, 1 );
 838                         if(error) { FT_Done_Glyph( image ); continue; }
 839
 840                         bit = (FT_BitmapGlyph)image;
 841
 842                         for(v=0;v<bit->bitmap.rows;v++)
 843                                 for(u=0;u<bit->bitmap.width;u++)
 844                                 {
 845                                         int x=u+((pen.x+32)>>6)+ bit->left;
 846                                         int y=v+((pen.y+32)>>6)- bit->top;
 847                                         if(     y>=0 &&
 848                                                 x>=0 &&
 849                                                 y<surface->get_h() &&
 850                                                 x<surface->get_w())
 851                                         {
 852                                                 float myamount=(float)bit->bitmap.buffer[v*bit->bitmap.pitch+u]/255.0f;
 853                                                 if(invert)
 854                                                         myamount=1.0f-myamount;
 855                                                 (*surface)[y][x]=Color::blend(color,(*src_surface)[y][x],myamount*get_amount(),get_blend_method());
 856                                         }
 857                                 }
 858
 859                         FT_Done_Glyph( image );
 860                 }
 861                 //iter->clear_and_free();
 862         }
 863         }
 864
 865
 866         return true;
 867 }
 868
 869 synfig::Rect
 870 Layer_Freetype::get_bounding_rect()const
 871 {
 872         if(needs_sync_)
 873                 const_cast<Layer_Freetype*>(this)->sync();
 874 //      if(!is_disabled())
 875                 return synfig::Rect::full_plane();
 876 }