ReactOS Development > Doxygen

00001 /***************************************************************************/
00002 /*                                                                         */
00003 /*  cidobjs.c                                                              */
00004 /*                                                                         */
00005 /*    CID objects manager (body).                                          */
00006 /*                                                                         */
00007 /*  Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2008, 2010 by       */
00008 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
00009 /*                                                                         */
00010 /*  This file is part of the FreeType project, and may only be used,       */
00011 /*  modified, and distributed under the terms of the FreeType project      */
00012 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
00013 /*  this file you indicate that you have read the license and              */
00014 /*  understand and accept it fully.                                        */
00015 /*                                                                         */
00016 /***************************************************************************/
00017 
00018 
00019 #include <ft2build.h>
00020 #include FT_INTERNAL_DEBUG_H
00021 #include FT_INTERNAL_STREAM_H
00022 
00023 #include "cidgload.h"
00024 #include "cidload.h"
00025 
00026 #include FT_SERVICE_POSTSCRIPT_CMAPS_H
00027 #include FT_INTERNAL_POSTSCRIPT_AUX_H
00028 #include FT_INTERNAL_POSTSCRIPT_HINTS_H
00029 
00030 #include "ciderrs.h"
00031 
00032 
00033   /*************************************************************************/
00034   /*                                                                       */
00035   /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
00036   /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
00037   /* messages during execution.                                            */
00038   /*                                                                       */
00039 #undef  FT_COMPONENT
00040 #define FT_COMPONENT  trace_cidobjs
00041 
00042 
00043   /*************************************************************************/
00044   /*                                                                       */
00045   /*                            SLOT  FUNCTIONS                            */
00046   /*                                                                       */
00047   /*************************************************************************/
00048 
00049   FT_LOCAL_DEF( void )
00050   cid_slot_done( FT_GlyphSlot  slot )
00051   {
00052     slot->internal->glyph_hints = 0;
00053   }
00054 
00055 
00056   FT_LOCAL_DEF( FT_Error )
00057   cid_slot_init( FT_GlyphSlot  slot )
00058   {
00059     CID_Face          face;
00060     PSHinter_Service  pshinter;
00061 
00062 
00063     face     = (CID_Face)slot->face;
00064     pshinter = (PSHinter_Service)face->pshinter;
00065 
00066     if ( pshinter )
00067     {
00068       FT_Module  module;
00069 
00070 
00071       module = FT_Get_Module( slot->face->driver->root.library,
00072                               "pshinter" );
00073       if ( module )
00074       {
00075         T1_Hints_Funcs  funcs;
00076 
00077 
00078         funcs = pshinter->get_t1_funcs( module );
00079         slot->internal->glyph_hints = (void*)funcs;
00080       }
00081     }
00082 
00083     return 0;
00084   }
00085 
00086 
00087   /*************************************************************************/
00088   /*                                                                       */
00089   /*                           SIZE  FUNCTIONS                             */
00090   /*                                                                       */
00091   /*************************************************************************/
00092 
00093 
00094   static PSH_Globals_Funcs
00095   cid_size_get_globals_funcs( CID_Size  size )
00096   {
00097     CID_Face          face     = (CID_Face)size->root.face;
00098     PSHinter_Service  pshinter = (PSHinter_Service)face->pshinter;
00099     FT_Module         module;
00100 
00101 
00102     module = FT_Get_Module( size->root.face->driver->root.library,
00103                             "pshinter" );
00104     return ( module && pshinter && pshinter->get_globals_funcs )
00105            ? pshinter->get_globals_funcs( module )
00106            : 0;
00107   }
00108 
00109 
00110   FT_LOCAL_DEF( void )
00111   cid_size_done( FT_Size  cidsize )         /* CID_Size */
00112   {
00113     CID_Size  size = (CID_Size)cidsize;
00114 
00115 
00116     if ( cidsize->internal )
00117     {
00118       PSH_Globals_Funcs  funcs;
00119 
00120 
00121       funcs = cid_size_get_globals_funcs( size );
00122       if ( funcs )
00123         funcs->destroy( (PSH_Globals)cidsize->internal );
00124 
00125       cidsize->internal = 0;
00126     }
00127   }
00128 
00129 
00130   FT_LOCAL_DEF( FT_Error )
00131   cid_size_init( FT_Size  cidsize )     /* CID_Size */
00132   {
00133     CID_Size           size  = (CID_Size)cidsize;
00134     FT_Error           error = CID_Err_Ok;
00135     PSH_Globals_Funcs  funcs = cid_size_get_globals_funcs( size );
00136 
00137 
00138     if ( funcs )
00139     {
00140       PSH_Globals   globals;
00141       CID_Face      face = (CID_Face)cidsize->face;
00142       CID_FaceDict  dict = face->cid.font_dicts + face->root.face_index;
00143       PS_Private    priv = &dict->private_dict;
00144 
00145 
00146       error = funcs->create( cidsize->face->memory, priv, &globals );
00147       if ( !error )
00148         cidsize->internal = (FT_Size_Internal)(void*)globals;
00149     }
00150 
00151     return error;
00152   }
00153 
00154 
00155   FT_LOCAL( FT_Error )
00156   cid_size_request( FT_Size          size,
00157                     FT_Size_Request  req )
00158   {
00159     PSH_Globals_Funcs  funcs;
00160 
00161 
00162     FT_Request_Metrics( size->face, req );
00163 
00164     funcs = cid_size_get_globals_funcs( (CID_Size)size );
00165 
00166     if ( funcs )
00167       funcs->set_scale( (PSH_Globals)size->internal,
00168                         size->metrics.x_scale,
00169                         size->metrics.y_scale,
00170                         0, 0 );
00171 
00172     return CID_Err_Ok;
00173   }
00174 
00175 
00176   /*************************************************************************/
00177   /*                                                                       */
00178   /*                           FACE  FUNCTIONS                             */
00179   /*                                                                       */
00180   /*************************************************************************/
00181 
00182   /*************************************************************************/
00183   /*                                                                       */
00184   /* <Function>                                                            */
00185   /*    cid_face_done                                                      */
00186   /*                                                                       */
00187   /* <Description>                                                         */
00188   /*    Finalizes a given face object.                                     */
00189   /*                                                                       */
00190   /* <Input>                                                               */
00191   /*    face :: A pointer to the face object to destroy.                   */
00192   /*                                                                       */
00193   FT_LOCAL_DEF( void )
00194   cid_face_done( FT_Face  cidface )         /* CID_Face */
00195   {
00196     CID_Face      face = (CID_Face)cidface;
00197     FT_Memory     memory;
00198     CID_FaceInfo  cid;
00199     PS_FontInfo   info;
00200 
00201 
00202     if ( !face )
00203       return;
00204 
00205     cid    = &face->cid;
00206     info   = &cid->font_info;
00207     memory = cidface->memory;
00208 
00209     /* release subrs */
00210     if ( face->subrs )
00211     {
00212       FT_Int  n;
00213 
00214 
00215       for ( n = 0; n < cid->num_dicts; n++ )
00216       {
00217         CID_Subrs  subr = face->subrs + n;
00218 
00219 
00220         if ( subr->code )
00221         {
00222           FT_FREE( subr->code[0] );
00223           FT_FREE( subr->code );
00224         }
00225       }
00226 
00227       FT_FREE( face->subrs );
00228     }
00229 
00230     /* release FontInfo strings */
00231     FT_FREE( info->version );
00232     FT_FREE( info->notice );
00233     FT_FREE( info->full_name );
00234     FT_FREE( info->family_name );
00235     FT_FREE( info->weight );
00236 
00237     /* release font dictionaries */
00238     FT_FREE( cid->font_dicts );
00239     cid->num_dicts = 0;
00240 
00241     /* release other strings */
00242     FT_FREE( cid->cid_font_name );
00243     FT_FREE( cid->registry );
00244     FT_FREE( cid->ordering );
00245 
00246     cidface->family_name = 0;
00247     cidface->style_name  = 0;
00248 
00249     FT_FREE( face->binary_data );
00250     FT_FREE( face->cid_stream );
00251   }
00252 
00253 
00254   /*************************************************************************/
00255   /*                                                                       */
00256   /* <Function>                                                            */
00257   /*    cid_face_init                                                      */
00258   /*                                                                       */
00259   /* <Description>                                                         */
00260   /*    Initializes a given CID face object.                               */
00261   /*                                                                       */
00262   /* <Input>                                                               */
00263   /*    stream     :: The source font stream.                              */
00264   /*                                                                       */
00265   /*    face_index :: The index of the font face in the resource.          */
00266   /*                                                                       */
00267   /*    num_params :: Number of additional generic parameters.  Ignored.   */
00268   /*                                                                       */
00269   /*    params     :: Additional generic parameters.  Ignored.             */
00270   /*                                                                       */
00271   /* <InOut>                                                               */
00272   /*    face       :: The newly built face object.                         */
00273   /*                                                                       */
00274   /* <Return>                                                              */
00275   /*    FreeType error code.  0 means success.                             */
00276   /*                                                                       */
00277   FT_LOCAL_DEF( FT_Error )
00278   cid_face_init( FT_Stream      stream,
00279                  FT_Face        cidface,        /* CID_Face */
00280                  FT_Int         face_index,
00281                  FT_Int         num_params,
00282                  FT_Parameter*  params )
00283   {
00284     CID_Face          face = (CID_Face)cidface;
00285     FT_Error          error;
00286     PSAux_Service     psaux;
00287     PSHinter_Service  pshinter;
00288 
00289     FT_UNUSED( num_params );
00290     FT_UNUSED( params );
00291     FT_UNUSED( stream );
00292 
00293 
00294     cidface->num_faces = 1;
00295 
00296     psaux = (PSAux_Service)face->psaux;
00297     if ( !psaux )
00298     {
00299       psaux = (PSAux_Service)FT_Get_Module_Interface(
00300                 FT_FACE_LIBRARY( face ), "psaux" );
00301 
00302       face->psaux = psaux;
00303     }
00304 
00305     pshinter = (PSHinter_Service)face->pshinter;
00306     if ( !pshinter )
00307     {
00308       pshinter = (PSHinter_Service)FT_Get_Module_Interface(
00309                    FT_FACE_LIBRARY( face ), "pshinter" );
00310 
00311       face->pshinter = pshinter;
00312     }
00313 
00314     /* open the tokenizer; this will also check the font format */
00315     if ( FT_STREAM_SEEK( 0 ) )
00316       goto Exit;
00317 
00318     error = cid_face_open( face, face_index );
00319     if ( error )
00320       goto Exit;
00321 
00322     /* if we just wanted to check the format, leave successfully now */
00323     if ( face_index < 0 )
00324       goto Exit;
00325 
00326     /* check the face index */
00327     /* XXX: handle CID fonts with more than a single face */
00328     if ( face_index != 0 )
00329     {
00330       FT_ERROR(( "cid_face_init: invalid face index\n" ));
00331       error = CID_Err_Invalid_Argument;
00332       goto Exit;
00333     }
00334 
00335     /* now load the font program into the face object */
00336 
00337     /* initialize the face object fields */
00338 
00339     /* set up root face fields */
00340     {
00341       CID_FaceInfo  cid  = &face->cid;
00342       PS_FontInfo   info = &cid->font_info;
00343 
00344 
00345       cidface->num_glyphs   = cid->cid_count;
00346       cidface->num_charmaps = 0;
00347 
00348       cidface->face_index = face_index;
00349       cidface->face_flags = FT_FACE_FLAG_SCALABLE   | /* scalable outlines */
00350                             FT_FACE_FLAG_HORIZONTAL | /* horizontal data   */
00351                             FT_FACE_FLAG_HINTER;      /* has native hinter */
00352 
00353       if ( info->is_fixed_pitch )
00354         cidface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
00355 
00356       /* XXX: TODO: add kerning with .afm support */
00357 
00358       /* get style name -- be careful, some broken fonts only */
00359       /* have a /FontName dictionary entry!                   */
00360       cidface->family_name = info->family_name;
00361       /* assume "Regular" style if we don't know better */
00362       cidface->style_name = (char *)"Regular";
00363       if ( cidface->family_name )
00364       {
00365         char*  full   = info->full_name;
00366         char*  family = cidface->family_name;
00367 
00368 
00369         if ( full )
00370         {
00371           while ( *full )
00372           {
00373             if ( *full == *family )
00374             {
00375               family++;
00376               full++;
00377             }
00378             else
00379             {
00380               if ( *full == ' ' || *full == '-' )
00381                 full++;
00382               else if ( *family == ' ' || *family == '-' )
00383                 family++;
00384               else
00385               {
00386                 if ( !*family )
00387                   cidface->style_name = full;
00388                 break;
00389               }
00390             }
00391           }
00392         }
00393       }
00394       else
00395       {
00396         /* do we have a `/FontName'? */
00397         if ( cid->cid_font_name )
00398           cidface->family_name = cid->cid_font_name;
00399       }
00400 
00401       /* compute style flags */
00402       cidface->style_flags = 0;
00403       if ( info->italic_angle )
00404         cidface->style_flags |= FT_STYLE_FLAG_ITALIC;
00405       if ( info->weight )
00406       {
00407         if ( !ft_strcmp( info->weight, "Bold"  ) ||
00408              !ft_strcmp( info->weight, "Black" ) )
00409           cidface->style_flags |= FT_STYLE_FLAG_BOLD;
00410       }
00411 
00412       /* no embedded bitmap support */
00413       cidface->num_fixed_sizes = 0;
00414       cidface->available_sizes = 0;
00415 
00416       cidface->bbox.xMin =   cid->font_bbox.xMin            >> 16;
00417       cidface->bbox.yMin =   cid->font_bbox.yMin            >> 16;
00418       /* no `U' suffix here to 0xFFFF! */
00419       cidface->bbox.xMax = ( cid->font_bbox.xMax + 0xFFFF ) >> 16;
00420       cidface->bbox.yMax = ( cid->font_bbox.yMax + 0xFFFF ) >> 16;
00421 
00422       if ( !cidface->units_per_EM )
00423         cidface->units_per_EM = 1000;
00424 
00425       cidface->ascender  = (FT_Short)( cidface->bbox.yMax );
00426       cidface->descender = (FT_Short)( cidface->bbox.yMin );
00427 
00428       cidface->height = (FT_Short)( ( cidface->units_per_EM * 12 ) / 10 );
00429       if ( cidface->height < cidface->ascender - cidface->descender )
00430         cidface->height = (FT_Short)( cidface->ascender - cidface->descender );
00431 
00432       cidface->underline_position  = (FT_Short)info->underline_position;
00433       cidface->underline_thickness = (FT_Short)info->underline_thickness;
00434     }
00435 
00436   Exit:
00437     return error;
00438   }
00439 
00440 
00441   /*************************************************************************/
00442   /*                                                                       */
00443   /* <Function>                                                            */
00444   /*    cid_driver_init                                                    */
00445   /*                                                                       */
00446   /* <Description>                                                         */
00447   /*    Initializes a given CID driver object.                             */
00448   /*                                                                       */
00449   /* <Input>                                                               */
00450   /*    driver :: A handle to the target driver object.                    */
00451   /*                                                                       */
00452   /* <Return>                                                              */
00453   /*    FreeType error code.  0 means success.                             */
00454   /*                                                                       */
00455   FT_LOCAL_DEF( FT_Error )
00456   cid_driver_init( FT_Module  driver )
00457   {
00458     FT_UNUSED( driver );
00459 
00460     return CID_Err_Ok;
00461   }
00462 
00463 
00464   /*************************************************************************/
00465   /*                                                                       */
00466   /* <Function>                                                            */
00467   /*    cid_driver_done                                                    */
00468   /*                                                                       */
00469   /* <Description>                                                         */
00470   /*    Finalizes a given CID driver.                                      */
00471   /*                                                                       */
00472   /* <Input>                                                               */
00473   /*    driver :: A handle to the target CID driver.                       */
00474   /*                                                                       */
00475   FT_LOCAL_DEF( void )
00476   cid_driver_done( FT_Module  driver )
00477   {
00478     FT_UNUSED( driver );
00479   }
00480 
00481 
00482 /* END */
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