ref: be556d5b81f063430f77c0b80f2bbe1ad606c7d3
dir: /src/type1/t1driver.c/
/***************************************************************************/
/* */
/* t1driver.c */
/* */
/* Type 1 driver interface (body). */
/* */
/* Copyright 1996-2001, 2002, 2003, 2004, 2006 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_SERVICE_MULTIPLE_MASTERS_H
#include FT_SERVICE_GLYPH_DICT_H
#include FT_SERVICE_XFREE86_NAME_H
#include FT_SERVICE_POSTSCRIPT_NAME_H
#include FT_SERVICE_POSTSCRIPT_CMAPS_H
#include FT_SERVICE_POSTSCRIPT_INFO_H
#include FT_SERVICE_KERNING_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_PsFontNameRec 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,
(FT_Get_MM_Var_Func) T1_Get_MM_Var,
(FT_Set_Var_Design_Func)T1_Set_Var_Design
};
#endif
/*
* POSTSCRIPT INFO SERVICE
*
*/
static FT_Error
t1_ps_get_font_info( FT_Face face,
PS_FontInfoRec* afont_info )
{
*afont_info = ((T1_Face)face)->type1.font_info;
return 0;
}
static FT_Int
t1_ps_has_glyph_names( FT_Face face )
{
FT_UNUSED( face );
return 1;
}
static FT_Error
t1_ps_get_font_private( FT_Face face,
PS_PrivateRec* afont_private )
{
*afont_private = ((T1_Face)face)->type1.private_dict;
return 0;
}
static const FT_Service_PsInfoRec t1_service_ps_info =
{
(PS_GetFontInfoFunc) t1_ps_get_font_info,
(PS_HasGlyphNamesFunc) t1_ps_has_glyph_names,
(PS_GetFontPrivateFunc)t1_ps_get_font_private,
};
#ifndef T1_CONFIG_OPTION_NO_AFM
static const FT_Service_KerningRec t1_service_kerning =
{
T1_Get_Track_Kerning,
};
#endif
/*
* SERVICE LIST
*
*/
static const FT_ServiceDescRec t1_services[] =
{
{ FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t1_service_ps_name },
{ FT_SERVICE_ID_GLYPH_DICT, &t1_service_glyph_dict },
{ FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TYPE_1 },
{ FT_SERVICE_ID_POSTSCRIPT_INFO, &t1_service_ps_info },
#ifndef T1_CONFIG_OPTION_NO_AFM
{ FT_SERVICE_ID_KERNING, &t1_service_kerning },
#endif
#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 );
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 )
{
kerning->x = 0;
kerning->y = 0;
if ( face->afm_data )
T1_Get_Kerning( (AFM_FontInfo)face->afm_data,
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,
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
ft_stub_set_char_sizes,
ft_stub_set_pixel_sizes,
#endif
(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_Metrics,
#endif
(FT_Face_GetAdvancesFunc) 0,
(FT_Size_RequestFunc) T1_Size_Request,
(FT_Size_SelectFunc) 0
};
/* END */