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5cb356405e
freetype/src/type1/t1driver.c
Werner Lemberg 5cb356405e Add some variable initializations. 
Reported by Richard COOK <rscook@unicode.org>.

* src/type1/t1driver.c (t1_ps_get_font_value): Initialize `val'.
* src/smooth/ftgrays.c (gray_render_conic): Initialize `levels'
earlier.
2011-12-10 23:16:04 +01:00

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/***************************************************************************/
/* */
/* t1driver.c */
/* */
/* Type 1 driver interface (body). */
/* */
/* Copyright 1996-2004, 2006, 2007, 2009, 2011 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_STRCPYN( buffer, face->type1.glyph_names[glyph_index], buffer_max );
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 T1_Err_Ok;
}
static FT_Error
t1_ps_get_font_extra( FT_Face face,
PS_FontExtraRec* afont_extra )
{
*afont_extra = ((T1_Face)face)->type1.font_extra;
return T1_Err_Ok;
}
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 T1_Err_Ok;
}
static FT_Long
t1_ps_get_font_value( FT_Face face,
PS_Dict_Keys key,
FT_UInt idx,
void *value,
FT_Long value_len )
{
FT_Long retval = -1;
T1_Face t1face = (T1_Face)face;
T1_Font type1 = &t1face->type1;
switch ( key )
{
case PS_DICT_FONT_TYPE:
retval = sizeof ( type1->font_type );
if ( value && value_len >= retval )
*((FT_Byte *)value) = type1->font_type;
break;
case PS_DICT_FONT_MATRIX:
if ( idx < sizeof ( type1->font_matrix ) /
sizeof ( type1->font_matrix.xx ) )
{
FT_Fixed val = 0;
retval = sizeof ( val );
if ( value && value_len >= retval )
{
switch ( idx )
{
case 0:
val = type1->font_matrix.xx;
break;
case 1:
val = type1->font_matrix.xy;
break;
case 2:
val = type1->font_matrix.yx;
break;
case 3:
val = type1->font_matrix.yy;
break;
}
*((FT_Fixed *)value) = val;
}
}
break;
case PS_DICT_FONT_BBOX:
if ( idx < sizeof ( type1->font_bbox ) /
sizeof ( type1->font_bbox.xMin ) )
{
FT_Fixed val = 0;
retval = sizeof ( val );
if ( value && value_len >= retval )
{
switch ( idx )
{
case 0:
val = type1->font_bbox.xMin;
break;
case 1:
val = type1->font_bbox.yMin;
break;
case 2:
val = type1->font_bbox.xMax;
break;
case 3:
val = type1->font_bbox.yMax;
break;
}
*((FT_Fixed *)value) = val;
}
}
break;
case PS_DICT_PAINT_TYPE:
retval = sizeof ( type1->paint_type );
if ( value && value_len >= retval )
*((FT_Byte *)value) = type1->paint_type;
break;
case PS_DICT_FONT_NAME:
retval = ft_strlen( type1->font_name ) + 1;
if ( value && value_len >= retval )
ft_memcpy( value, (void *)( type1->font_name ), retval );
break;
case PS_DICT_UNIQUE_ID:
retval = sizeof ( type1->private_dict.unique_id );
if ( value && value_len >= retval )
*((FT_Int *)value) = type1->private_dict.unique_id;
break;
case PS_DICT_NUM_CHAR_STRINGS:
retval = sizeof ( type1->num_glyphs );
if ( value && value_len >= retval )
*((FT_Int *)value) = type1->num_glyphs;
break;
case PS_DICT_CHAR_STRING_KEY:
if ( idx < (FT_UInt)type1->num_glyphs )
{
retval = ft_strlen( type1->glyph_names[idx] ) + 1;
if ( value && value_len >= retval )
{
ft_memcpy( value, (void *)( type1->glyph_names[idx] ), retval );
((FT_Char *)value)[retval - 1] = (FT_Char)'\0';
}
}
break;
case PS_DICT_CHAR_STRING:
if ( idx < (FT_UInt)type1->num_glyphs )
{
retval = type1->charstrings_len[idx] + 1;
if ( value && value_len >= retval )
{
ft_memcpy( value, (void *)( type1->charstrings[idx] ),
retval - 1 );
((FT_Char *)value)[retval - 1] = (FT_Char)'\0';
}
}
break;
case PS_DICT_ENCODING_TYPE:
retval = sizeof ( type1->encoding_type );
if ( value && value_len >= retval )
*((T1_EncodingType *)value) = type1->encoding_type;
break;
case PS_DICT_ENCODING_ENTRY:
if ( type1->encoding_type == T1_ENCODING_TYPE_ARRAY &&
idx < (FT_UInt)type1->encoding.num_chars )
{
retval = ft_strlen( type1->encoding.char_name[idx] ) + 1;
if ( value && value_len >= retval )
{
ft_memcpy( value, (void *)( type1->encoding.char_name[idx] ),
retval - 1 );
((FT_Char *)value)[retval - 1] = (FT_Char)'\0';
}
}
break;
case PS_DICT_NUM_SUBRS:
retval = sizeof ( type1->num_subrs );
if ( value && value_len >= retval )
*((FT_Int *)value) = type1->num_subrs;
break;
case PS_DICT_SUBR:
if ( idx < (FT_UInt)type1->num_subrs )
{
retval = type1->subrs_len[idx] + 1;
if ( value && value_len >= retval )
{
ft_memcpy( value, (void *)( type1->subrs[idx] ), retval - 1 );
((FT_Char *)value)[retval - 1] = (FT_Char)'\0';
}
}
break;
case PS_DICT_STD_HW:
retval = sizeof ( type1->private_dict.standard_width[0] );
if ( value && value_len >= retval )
*((FT_UShort *)value) = type1->private_dict.standard_width[0];
break;
case PS_DICT_STD_VW:
retval = sizeof ( type1->private_dict.standard_height[0] );
if ( value && value_len >= retval )
*((FT_UShort *)value) = type1->private_dict.standard_height[0];
break;
case PS_DICT_NUM_BLUE_VALUES:
retval = sizeof ( type1->private_dict.num_blue_values );
if ( value && value_len >= retval )
*((FT_Byte *)value) = type1->private_dict.num_blue_values;
break;
case PS_DICT_BLUE_VALUE:
if ( idx < type1->private_dict.num_blue_values )
{
retval = sizeof ( type1->private_dict.blue_values[idx] );
if ( value && value_len >= retval )
*((FT_Short *)value) = type1->private_dict.blue_values[idx];
}
break;
case PS_DICT_BLUE_SCALE:
retval = sizeof ( type1->private_dict.blue_scale );
if ( value && value_len >= retval )
*((FT_Fixed *)value) = type1->private_dict.blue_scale;
break;
case PS_DICT_BLUE_FUZZ:
retval = sizeof ( type1->private_dict.blue_fuzz );
if ( value && value_len >= retval )
*((FT_Int *)value) = type1->private_dict.blue_fuzz;
break;
case PS_DICT_BLUE_SHIFT:
retval = sizeof ( type1->private_dict.blue_shift );
if ( value && value_len >= retval )
*((FT_Int *)value) = type1->private_dict.blue_shift;
break;
case PS_DICT_NUM_OTHER_BLUES:
retval = sizeof ( type1->private_dict.num_other_blues );
if ( value && value_len >= retval )
*((FT_Byte *)value) = type1->private_dict.num_other_blues;
break;
case PS_DICT_OTHER_BLUE:
if ( idx < type1->private_dict.num_other_blues )
{
retval = sizeof ( type1->private_dict.other_blues[idx] );
if ( value && value_len >= retval )
*((FT_Short *)value) = type1->private_dict.other_blues[idx];
}
break;
case PS_DICT_NUM_FAMILY_BLUES:
retval = sizeof ( type1->private_dict.num_family_blues );
if ( value && value_len >= retval )
*((FT_Byte *)value) = type1->private_dict.num_family_blues;
break;
case PS_DICT_FAMILY_BLUE:
if ( idx < type1->private_dict.num_family_blues )
{
retval = sizeof ( type1->private_dict.family_blues[idx] );
if ( value && value_len >= retval )
*((FT_Short *)value) = type1->private_dict.family_blues[idx];
}
break;
case PS_DICT_NUM_FAMILY_OTHER_BLUES:
retval = sizeof ( type1->private_dict.num_family_other_blues );
if ( value && value_len >= retval )
*((FT_Byte *)value) = type1->private_dict.num_family_other_blues;
break;
case PS_DICT_FAMILY_OTHER_BLUE:
if ( idx < type1->private_dict.num_family_other_blues )
{
retval = sizeof ( type1->private_dict.family_other_blues[idx] );
if ( value && value_len >= retval )
*((FT_Short *)value) = type1->private_dict.family_other_blues[idx];
}
break;
case PS_DICT_NUM_STEM_SNAP_H:
retval = sizeof ( type1->private_dict.num_snap_widths );
if ( value && value_len >= retval )
*((FT_Byte *)value) = type1->private_dict.num_snap_widths;
break;
case PS_DICT_STEM_SNAP_H:
if ( idx < type1->private_dict.num_snap_widths )
{
retval = sizeof ( type1->private_dict.snap_widths[idx] );
if ( value && value_len >= retval )
*((FT_Short *)value) = type1->private_dict.snap_widths[idx];
}
break;
case PS_DICT_NUM_STEM_SNAP_V:
retval = sizeof ( type1->private_dict.num_snap_heights );
if ( value && value_len >= retval )
*((FT_Byte *)value) = type1->private_dict.num_snap_heights;
break;
case PS_DICT_STEM_SNAP_V:
if ( idx < type1->private_dict.num_snap_heights )
{
retval = sizeof ( type1->private_dict.snap_heights[idx] );
if ( value && value_len >= retval )
*((FT_Short *)value) = type1->private_dict.snap_heights[idx];
}
break;
case PS_DICT_RND_STEM_UP:
retval = sizeof ( type1->private_dict.round_stem_up );
if ( value && value_len >= retval )
*((FT_Bool *)value) = type1->private_dict.round_stem_up;
break;
case PS_DICT_FORCE_BOLD:
retval = sizeof ( type1->private_dict.force_bold );
if ( value && value_len >= retval )
*((FT_Bool *)value) = type1->private_dict.force_bold;
break;
case PS_DICT_MIN_FEATURE:
if ( idx < sizeof ( type1->private_dict.min_feature ) /
sizeof ( type1->private_dict.min_feature[0] ) )
{
retval = sizeof ( type1->private_dict.min_feature[idx] );
if ( value && value_len >= retval )
*((FT_Short *)value) = type1->private_dict.min_feature[idx];
}
break;
case PS_DICT_LEN_IV:
retval = sizeof ( type1->private_dict.lenIV );
if ( value && value_len >= retval )
*((FT_Int *)value) = type1->private_dict.lenIV;
break;
case PS_DICT_PASSWORD:
retval = sizeof ( type1->private_dict.password );
if ( value && value_len >= retval )
*((FT_Long *)value) = type1->private_dict.password;
break;
case PS_DICT_LANGUAGE_GROUP:
retval = sizeof ( type1->private_dict.language_group );
if ( value && value_len >= retval )
*((FT_Long *)value) = type1->private_dict.language_group;
break;
case PS_DICT_IS_FIXED_PITCH:
retval = sizeof ( type1->font_info.is_fixed_pitch );
if ( value && value_len >= retval )
*((FT_Bool *)value) = type1->font_info.is_fixed_pitch;
break;
case PS_DICT_UNDERLINE_POSITION:
retval = sizeof ( type1->font_info.underline_position );
if ( value && value_len >= retval )
*((FT_Short *)value) = type1->font_info.underline_position;
break;
case PS_DICT_UNDERLINE_THICKNESS:
retval = sizeof ( type1->font_info.underline_thickness );
if ( value && value_len >= retval )
*((FT_UShort *)value) = type1->font_info.underline_thickness;
break;
case PS_DICT_FS_TYPE:
retval = sizeof ( type1->font_extra.fs_type );
if ( value && value_len >= retval )
*((FT_UShort *)value) = type1->font_extra.fs_type;
break;
case PS_DICT_VERSION:
retval = ft_strlen( type1->font_info.version ) + 1;
if ( value && value_len >= retval )
ft_memcpy( value, (void *)( type1->font_info.version ), retval );
break;
case PS_DICT_NOTICE:
retval = ft_strlen( type1->font_info.notice ) + 1;
if ( value && value_len >= retval )
ft_memcpy( value, (void *)( type1->font_info.notice ), retval );
break;
case PS_DICT_FULL_NAME:
retval = ft_strlen( type1->font_info.full_name ) + 1;
if ( value && value_len >= retval )
ft_memcpy( value, (void *)( type1->font_info.full_name ), retval );
break;
case PS_DICT_FAMILY_NAME:
retval = ft_strlen( type1->font_info.family_name ) + 1;
if ( value && value_len >= retval )
ft_memcpy( value, (void *)( type1->font_info.family_name ), retval );
break;
case PS_DICT_WEIGHT:
retval = ft_strlen( type1->font_info.weight ) + 1;
if ( value && value_len >= retval )
ft_memcpy( value, (void *)( type1->font_info.weight ), retval );
break;
case PS_DICT_ITALIC_ANGLE:
retval = sizeof ( type1->font_info.italic_angle );
if ( value && value_len >= retval )
*((FT_Long *)value) = type1->font_info.italic_angle;
break;
default:
break;
}
return retval;
}
static const FT_Service_PsInfoRec t1_service_ps_info =
{
(PS_GetFontInfoFunc) t1_ps_get_font_info,
(PS_GetFontExtraFunc) t1_ps_get_font_extra,
(PS_HasGlyphNamesFunc) t1_ps_has_glyph_names,
(PS_GetFontPrivateFunc)t1_ps_get_font_private,
(PS_GetFontValueFunc) t1_ps_get_font_value,
};
#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 }
};
FT_CALLBACK_DEF( FT_Module_Interface )
Get_Interface( FT_Module module,
const FT_String* t1_interface )
{
FT_UNUSED( module );
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( FT_Face t1face, /* T1_Face */
FT_UInt left_glyph,
FT_UInt right_glyph,
FT_Vector* kerning )
{
T1_Face face = (T1_Face)t1face;
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 */
T1_Driver_Init,
T1_Driver_Done,
Get_Interface,
},
sizeof ( T1_FaceRec ),
sizeof ( T1_SizeRec ),
sizeof ( T1_GlyphSlotRec ),
T1_Face_Init,
T1_Face_Done,
T1_Size_Init,
T1_Size_Done,
T1_GlyphSlot_Init,
T1_GlyphSlot_Done,
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
ft_stub_set_char_sizes,
ft_stub_set_pixel_sizes,
#endif
T1_Load_Glyph,
#ifdef T1_CONFIG_OPTION_NO_AFM
0, /* FT_Face_GetKerningFunc */
0, /* FT_Face_AttachFunc */
#else
Get_Kerning,
T1_Read_Metrics,
#endif
T1_Get_Advances,
T1_Size_Request,
0 /* FT_Size_SelectFunc */
};
/* END */
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