kc3-lang/freetype/src/type1/t1driver.c

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• Hash : c313c502
  Author :
  Date : 2003-09-11T19:51:54
  

  * include/freetype/ftmm.h, include/freetype/ftmodule.h, include/freetype/tttables.h, include/freetype/config/ftconfig.h, include/freetype/internal/ftobjs.h, include/freetype/internal/ftserv.h, include/freetype/internal/internal.h, include/freetype/internal/sfnt.h, include/freetype/internal/tttypes.h, include/freetype/internal/services/bdf.h, include/freetype/internal/services/glyfdict.h, include/freetype/internal/services/multmast.h, include/freetype/internal/services/postname.h, include/freetype/internal/services/sfnt.h, include/freetype/internal/services/xf86name.h, src/base/ftbdf.c, src/base/ftmm.c, src/base/ftobjs.c, src/base/ftxf86.c, src/bdf/bdfdrivr.c, src/cff/cffdrivr.c, src/cid/cidriver.c, src/pcf/pcfdrivr.c, src/sfnt/sfdriver.c, src/truetype/ttdriver.c, src/type1/t1driver.c, src/type42/t42drivr.c: heavy internal modifications to introduce the concept of "module services". This is the first step towards a massive simplification of the engine's internals, in order to get rid of various numbers of hacks. Note that this changes will break source & binary compatibility for authors of external font drivers. Maybe 2.1.6 will be called 2.2.0 after all :-)

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• src/type1/t1driver.c

• /***************************************************************************/
  /*                                                                         */
  /*  t1driver.c                                                             */
  /*                                                                         */
  /*    Type 1 driver interface (body).                                      */
  /*                                                                         */
  /*  Copyright 1996-2001, 2002 by                                           */
  /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  /*                                                                         */
  /*  This file is part of the FreeType project, and may only be used,       */
  /*  modified, and distributed under the terms of the FreeType project      */
  /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  /*  this file you indicate that you have read the license and              */
  /*  understand and accept it fully.                                        */
  /*                                                                         */
  /***************************************************************************/
  
  
  #include <ft2build.h>
  #include "t1driver.h"
  #include "t1gload.h"
  #include "t1load.h"
  
  #include "t1errors.h"
  
  #ifndef T1_CONFIG_OPTION_NO_AFM
  #include "t1afm.h"
  #endif
  
  #include FT_INTERNAL_DEBUG_H
  #include FT_INTERNAL_STREAM_H
  #include FT_INTERNAL_POSTSCRIPT_NAMES_H
  
  #include FT_SERVICE_MULTIPLE_MASTERS_H
  #include FT_SERVICE_GLYPH_DICT_H
  #include FT_SERVICE_XFREE86_NAME_H
  #include FT_SERVICE_POSTSCRIPT_NAME_H
  
    /*************************************************************************/
    /*                                                                       */
    /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
    /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
    /* messages during execution.                                            */
    /*                                                                       */
  #undef  FT_COMPONENT
  #define FT_COMPONENT  trace_t1driver
  
   /*
    *  GLYPH DICT SERVICE
    *
    */
  
    static FT_Error
    t1_get_glyph_name( T1_Face     face,
                       FT_UInt     glyph_index,
                       FT_Pointer  buffer,
                       FT_UInt     buffer_max )
    {
      FT_String*  gname;
  
  
      gname = face->type1.glyph_names[glyph_index];
  
      if ( buffer_max > 0 )
      {
        FT_UInt  len = (FT_UInt)( ft_strlen( gname ) );
  
  
        if (len >= buffer_max)
          len = buffer_max - 1;
  
        FT_MEM_COPY( buffer, gname, len );
        ((FT_Byte*)buffer)[len] = 0;
      }
  
      return T1_Err_Ok;
    }
  
  
    static FT_UInt
    t1_get_name_index( T1_Face     face,
                       FT_String*  glyph_name )
    {
      FT_Int      i;
      FT_String*  gname;
  
  
      for ( i = 0; i < face->type1.num_glyphs; i++ )
      {
        gname = face->type1.glyph_names[i];
  
        if ( !ft_strcmp( glyph_name, gname ) )
          return (FT_UInt)i;
      }
  
      return 0;
    }
  
    static const FT_Service_GlyphDictRec  t1_service_glyph_dict =
    {
      (FT_GlyphDict_GetNameFunc)    t1_get_glyph_name,
      (FT_GlyphDict_NameIndexFunc)  t1_get_name_index
    };
  
  
   /*
    *  POSTSCRIPT NAME SERVICE
    *
    */
  
    static const char*
    t1_get_ps_name( T1_Face  face )
    {
      return (const char*) face->type1.font_name;
    }
  
    static const FT_Service_PsNameRec  t1_service_ps_name =
    {
      (FT_PsName_GetFunc) & t1_get_ps_name
    };
  
  
   /*
    *  MULTIPLE MASTERS SERVICE
    *
    */
  
  #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
    static const FT_Service_MultiMastersRec  t1_service_multi_masters =
    {
      (FT_Get_MM_Func)         T1_Get_Multi_Master,
      (FT_Set_MM_Design_Func)  T1_Set_MM_Design,
      (FT_Set_MM_Blend_Func)   T1_Set_MM_Blend
    };
  #endif
  
  
   /*
    *  SERVICE LIST
    *
    */
  
    static const FT_ServiceDescRec  t1_services[] =
    {
      { FT_SERVICE_ID_POSTSCRIPT_NAME, &t1_service_ps_name },
      { FT_SERVICE_ID_GLYPH_DICT,      &t1_service_glyph_dict },
      { FT_SERVICE_ID_XF86_NAME,       FT_XF86_FORMAT_TYPE_1 },
      
  #ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT    
      { FT_SERVICE_ID_MULTI_MASTERS, &t1_service_multi_masters },
  #endif      
      { NULL, NULL }
    };
  
  
    static FT_Module_Interface
    Get_Interface( FT_Driver         driver,
                   const FT_String*  t1_interface )
    {
      FT_UNUSED( driver );
      FT_UNUSED( t1_interface );
  
      return ft_service_list_lookup( t1_services, t1_interface );
    }
  
  
  #ifndef T1_CONFIG_OPTION_NO_AFM
  
    /*************************************************************************/
    /*                                                                       */
    /* <Function>                                                            */
    /*    Get_Kerning                                                        */
    /*                                                                       */
    /* <Description>                                                         */
    /*    A driver method used to return the kerning vector between two      */
    /*    glyphs of the same face.                                           */
    /*                                                                       */
    /* <Input>                                                               */
    /*    face        :: A handle to the source face object.                 */
    /*                                                                       */
    /*    left_glyph  :: The index of the left glyph in the kern pair.       */
    /*                                                                       */
    /*    right_glyph :: The index of the right glyph in the kern pair.      */
    /*                                                                       */
    /* <Output>                                                              */
    /*    kerning     :: The kerning vector.  This is in font units for      */
    /*                   scalable formats, and in pixels for fixed-sizes     */
    /*                   formats.                                            */
    /*                                                                       */
    /* <Return>                                                              */
    /*    FreeType error code.  0 means success.                             */
    /*                                                                       */
    /* <Note>                                                                */
    /*    Only horizontal layouts (left-to-right & right-to-left) are        */
    /*    supported by this function.  Other layouts, or more sophisticated  */
    /*    kernings are out of scope of this method (the basic driver         */
    /*    interface is meant to be simple).                                  */
    /*                                                                       */
    /*    They can be implemented by format-specific interfaces.             */
    /*                                                                       */
    static FT_Error
    Get_Kerning( T1_Face     face,
                 FT_UInt     left_glyph,
                 FT_UInt     right_glyph,
                 FT_Vector*  kerning )
    {
      T1_AFM*  afm;
  
  
      kerning->x = 0;
      kerning->y = 0;
  
      afm = (T1_AFM*)face->afm_data;
      if ( afm )
        T1_Get_Kerning( afm, left_glyph, right_glyph, kerning );
  
      return T1_Err_Ok;
    }
  
  
  #endif /* T1_CONFIG_OPTION_NO_AFM */
  
  
    FT_CALLBACK_TABLE_DEF
    const FT_Driver_ClassRec  t1_driver_class =
    {
      {
        FT_MODULE_FONT_DRIVER       |
        FT_MODULE_DRIVER_SCALABLE   |
        FT_MODULE_DRIVER_HAS_HINTER,
  
        sizeof( FT_DriverRec ),
  
        "type1",
        0x10000L,
        0x20000L,
  
        0,   /* format interface */
  
        (FT_Module_Constructor)T1_Driver_Init,
        (FT_Module_Destructor) T1_Driver_Done,
        (FT_Module_Requester)  Get_Interface,
      },
  
      sizeof( T1_FaceRec ),
      sizeof( T1_SizeRec ),
      sizeof( T1_GlyphSlotRec ),
  
      (FT_Face_InitFunc)        T1_Face_Init,
      (FT_Face_DoneFunc)        T1_Face_Done,
      (FT_Size_InitFunc)        T1_Size_Init,
      (FT_Size_DoneFunc)        T1_Size_Done,
      (FT_Slot_InitFunc)        T1_GlyphSlot_Init,
      (FT_Slot_DoneFunc)        T1_GlyphSlot_Done,
  
      (FT_Size_ResetPointsFunc) T1_Size_Reset,
      (FT_Size_ResetPixelsFunc) T1_Size_Reset,
      (FT_Slot_LoadFunc)        T1_Load_Glyph,
  
  #ifdef T1_CONFIG_OPTION_NO_AFM
      (FT_Face_GetKerningFunc)  0,
      (FT_Face_AttachFunc)      0,
  #else
      (FT_Face_GetKerningFunc)  Get_Kerning,
      (FT_Face_AttachFunc)      T1_Read_AFM,
  #endif
      (FT_Face_GetAdvancesFunc) 0
    };
  
  
  /* END */
  

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