ref: 9ca2af38384a3fc3a26cc7eae96c59ad08aca2b2
dir: /src/cid/cidobjs.c/
/***************************************************************************/
/* */
/* cidobjs.c */
/* */
/* CID objects manager (body). */
/* */
/* Copyright 1996-2000 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 <freetype/internal/ftdebug.h>
#include <freetype/internal/ftstream.h>
#include <cidgload.h>
#include <cidload.h>
#include <freetype/internal/psnames.h>
#include <cidafm.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_cidobjs
/*************************************************************************/
/* */
/* SIZE FUNCTIONS */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* <Function> */
/* CID_Done_Size */
/* */
/* <Description> */
/* The CID size object finalizer. */
/* */
/* <Input> */
/* size :: A handle to the target size object. */
/* */
LOCAL_FUNC
void CID_Done_Size( T1_Size size )
{
UNUSED( size );
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Init_Size */
/* */
/* <Description> */
/* Initializes a new CID size object. */
/* */
/* <InOut> */
/* size :: A handle to the size object. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
LOCAL_DEF
FT_Error CID_Init_Size( T1_Size size )
{
size->valid = 0;
return T1_Err_Ok;
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Reset_Size */
/* */
/* <Description> */
/* Resets a OpenType size when resolutions and character dimensions */
/* have been changed. */
/* */
/* <Input> */
/* size :: A handle to the target size object. */
/* */
/* <Output> */
/* FreeType error code. 0 means success. */
/* */
LOCAL_FUNC
FT_Error CID_Reset_Size( T1_Size size )
{
/* recompute ascender, descender, etc. */
CID_Face face = (CID_Face)size->root.face;
FT_Size_Metrics* metrics = &size->root.metrics;
if ( metrics->x_ppem < 1 || metrics->y_ppem < 1 )
return T1_Err_Invalid_Argument;
/* Compute root ascender, descender, test height, and max_advance */
metrics->ascender = ( FT_MulFix( face->root.ascender,
metrics->y_scale ) + 32 ) & -64;
metrics->descender = ( FT_MulFix( face->root.descender,
metrics->y_scale ) + 32 ) & -64;
metrics->height = ( FT_MulFix( face->root.height,
metrics->y_scale ) + 32 ) & -64;
metrics->max_advance = ( FT_MulFix( face->root.max_advance_width,
metrics->x_scale ) + 32 ) & -64;
return T1_Err_Ok;
}
/*************************************************************************/
/* */
/* FACE FUNCTIONS */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* <Function> */
/* CID_Done_Face */
/* */
/* <Description> */
/* Finalizes a given face object. */
/* */
/* <Input> */
/* face :: A pointer to the face object to destroy. */
/* */
LOCAL_FUNC
void CID_Done_Face( CID_Face face )
{
FT_Memory memory;
if ( face )
{
CID_Info* cid = &face->cid;
T1_FontInfo* info = &cid->font_info;
memory = face->root.memory;
/* release FontInfo strings */
FREE( info->version );
FREE( info->notice );
FREE( info->full_name );
FREE( info->family_name );
FREE( info->weight );
/* release font dictionaries */
FREE( cid->font_dicts );
cid->num_dicts = 0;
/* release other strings */
FREE( cid->cid_font_name );
FREE( cid->registry );
FREE( cid->ordering );
face->root.family_name = 0;
face->root.style_name = 0;
}
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Init_Face */
/* */
/* <Description> */
/* Initializes a given CID face object. */
/* */
/* <Input> */
/* stream :: The source font stream. */
/* */
/* face_index :: The index of the font face in the resource. */
/* */
/* num_params :: Number of additional generic parameters. Ignored. */
/* */
/* params :: Additional generic parameters. Ignored. */
/* */
/* <InOut> */
/* face :: The newly built face object. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
LOCAL_FUNC
FT_Error CID_Init_Face( FT_Stream stream,
CID_Face face,
FT_Int face_index,
FT_Int num_params,
FT_Parameter* params )
{
FT_Error error;
PSNames_Interface* psnames;
UNUSED( num_params );
UNUSED( params );
UNUSED( face_index );
UNUSED( stream );
face->root.num_faces = 1;
psnames = (PSNames_Interface*)face->psnames;
if ( !psnames )
{
/* look-up the PSNames driver */
FT_Driver psnames_driver;
psnames_driver = FT_Get_Driver( face->root.driver->library, "psnames" );
if ( psnames_driver )
face->psnames = (PSNames_Interface*)
(psnames_driver->interface.format_interface);
}
/* open the tokenizer; this will also check the font format */
if ( FILE_Seek( 0 ) )
goto Exit;
error = CID_Open_Face( face );
if ( error )
goto Exit;
/* if we just wanted to check the format, leave successfully now */
if ( face_index < 0 )
goto Exit;
/* check the face index */
if ( face_index != 0 )
{
FT_ERROR(( "CID_Init_Face: invalid face index\n" ));
error = T1_Err_Invalid_Argument;
goto Exit;
}
/* Now, load the font program into the face object */
{
/* Init the face object fields */
/* Now set up root face fields */
{
FT_Face root = (FT_Face)&face->root;
root->num_glyphs = face->cid.cid_count;
root->num_charmaps = 0;
root->face_index = face_index;
root->face_flags = FT_FACE_FLAG_SCALABLE;
root->face_flags |= FT_FACE_FLAG_HORIZONTAL;
if ( face->cid.font_info.is_fixed_pitch )
root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
/* XXX: TO DO - add kerning with .afm support */
/* get style name - be careful, some broken fonts only */
/* have a /FontName dictionary entry! */
root->family_name = face->cid.font_info.family_name;
if ( root->family_name )
{
char* full = face->cid.font_info.full_name;
char* family = root->family_name;
while ( *family && *full == *family )
{
family++;
full++;
}
root->style_name = ( *full == ' ' ) ? full + 1
: "Regular";
}
else
{
/* do we have a `/FontName'? */
if ( face->cid.cid_font_name )
{
root->family_name = face->cid.cid_font_name;
root->style_name = "Regular";
}
}
/* no embedded bitmap support */
root->num_fixed_sizes = 0;
root->available_sizes = 0;
root->bbox = face->cid.font_bbox;
root->units_per_EM = 1000;
root->ascender = (FT_Short)face->cid.font_bbox.yMax;
root->descender = -(FT_Short)face->cid.font_bbox.yMin;
root->height = ( ( root->ascender + root->descender ) * 12 )
/ 10;
#if 0
/* now compute the maximum advance width */
root->max_advance_width = face->type1.private_dict.standard_width[0];
/* compute max advance width for proportional fonts */
if ( !face->type1.font_info.is_fixed_pitch )
{
FT_Int max_advance;
error = T1_Compute_Max_Advance( face, &max_advance );
/* in case of error, keep the standard width */
if ( !error )
root->max_advance_width = max_advance;
else
error = 0; /* clear error */
}
root->max_advance_height = root->height;
#endif /* 0 */
root->underline_position = face->cid.font_info.underline_position;
root->underline_thickness = face->cid.font_info.underline_thickness;
root->max_points = 0;
root->max_contours = 0;
}
}
#if 0
/* charmap support - synthetize unicode charmap when possible */
{
FT_Face root = &face->root;
FT_CharMap charmap = face->charmaprecs;
/* synthesize a Unicode charmap if there is support in the "psnames" */
/* module */
if ( face->psnames )
{
PSNames_Interface* psnames = (PSNames_Interface*)face->psnames;
if ( psnames->unicode_value )
{
error = psnames->build_unicodes(
root->memory,
face->type1.num_glyphs,
(const char**)face->type1.glyph_names,
&face->unicode_map );
if ( !error )
{
root->charmap = charmap;
charmap->face = (FT_Face)face;
charmap->encoding = ft_encoding_unicode;
charmap->platform_id = 3;
charmap->encoding_id = 1;
charmap++;
}
/* simply clear the error in case of failure (which really */
/* means that out of memory or no unicode glyph names) */
error = 0;
}
}
/* now, support either the standard, expert, or custom encodings */
charmap->face = (FT_Face)face;
charmap->platform_id = 7; /* a new platform id for Adobe fonts? */
switch ( face->type1.encoding_type )
{
case t1_encoding_standard:
charmap->encoding = ft_encoding_adobe_standard;
charmap->encoding_id = 0;
break;
case t1_encoding_expert:
charmap->encoding = ft_encoding_adobe_expert;
charmap->encoding_id = 1;
break;
default:
charmap->encoding = ft_encoding_adobe_custom;
charmap->encoding_id = 2;
break;
}
root->charmaps = face->charmaps;
root->num_charmaps = charmap - face->charmaprecs + 1;
face->charmaps[0] = &face->charmaprecs[0];
face->charmaps[1] = &face->charmaprecs[1];
}
#endif /* 0 */
Exit:
return error;
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Done_GlyphSlot */
/* */
/* <Description> */
/* The CID glyph slot finalizer. */
/* */
/* <Input> */
/* slot :: A handle to the glyph slot object. */
/* */
LOCAL_FUNC
void CID_Done_GlyphSlot( T1_GlyphSlot glyph )
{
FT_Memory memory = glyph->root.face->memory;
FT_Library library = glyph->root.face->driver->library;
/* the bitmaps are created on demand */
FREE( glyph->root.bitmap.buffer );
FT_Outline_Done( library, &glyph->root.outline );
return;
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Init_GlyphSlot */
/* */
/* <Description> */
/* The CID glyph slot initializer. */
/* */
/* <Input> */
/* slot :: The glyph record to build. */
/* */
/* <Output> */
/* FreeType error code. 0 means success. */
/* */
LOCAL_FUNC
FT_Error CID_Init_GlyphSlot( T1_GlyphSlot glyph )
{
FT_Library library = glyph->root.face->driver->library;
glyph->max_points = 0;
glyph->max_contours = 0;
glyph->root.bitmap.buffer = 0;
return FT_Outline_New( library, 0, 0, &glyph->root.outline );
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Init_Driver */
/* */
/* <Description> */
/* Initializes a given CID driver object. */
/* */
/* <Input> */
/* driver :: A handle to the target driver object. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
LOCAL_FUNC
FT_Error CID_Init_Driver( T1_Driver driver )
{
UNUSED( driver );
return T1_Err_Ok;
}
/*************************************************************************/
/* */
/* <Function> */
/* CID_Done_Driver */
/* */
/* <Description> */
/* Finalizes a given CID driver. */
/* */
/* <Input> */
/* driver :: A handle to the target CID driver. */
/* */
LOCAL_DEF
void CID_Done_Driver( T1_Driver driver )
{
UNUSED( driver );
}
/* END */