[tfm] Define the `tfm_interface' functions.
* src/tfm/tfmobjs.c: Do it.
This commit is contained in:
Parth Wazurkar
parent
72035f0025
commit
4c8db5478b
|
|
@ -0,0 +1,25 @@
|
|||
/****************************************************************************
|
||||
*
|
||||
* tfm.c
|
||||
*
|
||||
* FreeType auxiliary TFM module.
|
||||
*
|
||||
* Copyright 1996-2018 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.
|
||||
*
|
||||
*/
|
||||
|
||||
|
||||
#define FT_MAKE_OPTION_SINGLE_OBJECT
|
||||
#include <ft2build.h>
|
||||
|
||||
#include "tfmmod.c"
|
||||
|
||||
|
||||
/* END */
|
||||
|
|
@ -0,0 +1,389 @@
|
|||
/****************************************************************************
|
||||
*
|
||||
* tfmobjs.c
|
||||
*
|
||||
* FreeType auxiliary TFM module.
|
||||
*
|
||||
* Copyright 1996-2018 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 "tfmobjs.h"
|
||||
#include "tfmmod.h"
|
||||
#include FT_INTERNAL_STREAM_H
|
||||
#include "tfmerrors.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_tfmobjs
|
||||
|
||||
|
||||
/**************************************************************************
|
||||
*
|
||||
* TFM font utility functions.
|
||||
*
|
||||
*/
|
||||
|
||||
long tfm_read_intn(FT_Stream,int);
|
||||
unsigned long tfm_read_uintn(FT_Stream,int);
|
||||
|
||||
#define READ_UINT2( stream ) (UINT1)tfm_read_uintn( stream, 2)
|
||||
#define READ_UINT4( stream ) (UINT1)tfm_read_uintn( stream, 4)
|
||||
#define READ_INT4( stream ) (INT4)tfm_read_intn( stream, 4)
|
||||
|
||||
/*
|
||||
* Reading a Number from file
|
||||
*/
|
||||
unsigned long
|
||||
tfm_read_uintn(FT_Stream stream, int size)
|
||||
{
|
||||
unsigned long v,k;
|
||||
FT_Error error = FT_Err_Ok;
|
||||
FT_Byte tp;
|
||||
v = 0L;
|
||||
while (size >= 1)
|
||||
{
|
||||
if ( FT_READ_BYTE(tp) )
|
||||
return 0; /* To be changed */
|
||||
k =(unsigned long)tp;
|
||||
v = v*256L + k;
|
||||
--size;
|
||||
}
|
||||
return v;
|
||||
}
|
||||
|
||||
long
|
||||
tfm_read_intn(FT_Stream stream, int size)
|
||||
{
|
||||
long v;
|
||||
FT_Byte tp;
|
||||
FT_Error error= FT_Err_Ok;
|
||||
unsigned long z ;
|
||||
if ( FT_READ_BYTE(tp) )
|
||||
return 0; /* To be changed */
|
||||
z= (unsigned long)tp;
|
||||
v = (long)z & 0xffL;
|
||||
if (v & 0x80L)
|
||||
v = v - 256L;
|
||||
--size;
|
||||
while (size >= 1)
|
||||
{
|
||||
if ( FT_READ_BYTE(tp) )
|
||||
return 0; /* To be changed */
|
||||
z= (unsigned long)tp;
|
||||
v = v*256L + z;
|
||||
--size;
|
||||
}
|
||||
return v;
|
||||
}
|
||||
|
||||
/**************************************************************************
|
||||
*
|
||||
* API.
|
||||
*
|
||||
*/
|
||||
|
||||
FT_LOCAL_DEF( FT_Error )
|
||||
tfm_init( TFM_Parser parser,
|
||||
FT_Memory memory,
|
||||
FT_Stream stream )
|
||||
{
|
||||
FT_Error error;
|
||||
|
||||
parser->memory = memory;
|
||||
parser->stream = stream;
|
||||
parser->FontInfo = NULL;
|
||||
parser->user_data = NULL;
|
||||
|
||||
return FT_Err_Ok;
|
||||
}
|
||||
|
||||
|
||||
FT_LOCAL( void )
|
||||
tfm_close( TFM_Parser parser )
|
||||
{
|
||||
FT_Memory memory = parser->memory;
|
||||
|
||||
FT_FREE( parser->stream );
|
||||
}
|
||||
|
||||
|
||||
FT_LOCAL_DEF( FT_Error )
|
||||
tfm_parse_metrics( TFM_Parser parser )
|
||||
{
|
||||
FT_Memory memory = parser->memory;
|
||||
TFM_FontInfo fi = parser->FontInfo;
|
||||
FT_Error error = FT_ERR( Syntax_Error );
|
||||
|
||||
FT_ULong lf, lh, nc, nci, err;
|
||||
FT_ULong offset_header, offset_char_info, offset_param;
|
||||
FT_ULong nw, nh, nd, ni, nl, nk, neng, np, dir;
|
||||
|
||||
FT_Long *w, *h, *d;
|
||||
FT_ULong *ci, v;
|
||||
|
||||
FT_ULong i;
|
||||
FT_Long bbxw, bbxh, xoff, yoff;
|
||||
|
||||
if ( !fi )
|
||||
return FT_THROW( Invalid_Argument );
|
||||
|
||||
fi->width = NULL;
|
||||
fi->height = NULL;
|
||||
fi->depth = NULL;
|
||||
|
||||
fi->font_bbx_w = 0.0;
|
||||
fi->font_bbx_h = 0.0;
|
||||
fi->font_bbx_xoff = 0.0;
|
||||
fi->font_bbx_yoff = 0.0;
|
||||
|
||||
err = 0;
|
||||
/* rewind(fp); */
|
||||
if( FT_STREAM_SEEK( 0 ) )
|
||||
return error;
|
||||
|
||||
lf = (UINT4)READ_UINT2( stream );
|
||||
|
||||
#if 0
|
||||
if ((lf == 11) || (lf == 9))
|
||||
{
|
||||
/* JFM file of Japanese TeX by ASCII Coop. */
|
||||
tfm->type = METRIC_TYPE_JFM;
|
||||
tfm->type_aux = (lf == 11)?METRIC_TYPE_JFM_AUX_H:METRIC_TYPE_JFM_AUX_V;
|
||||
tfm->nt = (UINT4)READ_UINT2(fp);
|
||||
lf = (UINT4)READ_UINT2(fp);
|
||||
lh = (UINT4)READ_UINT2(fp);
|
||||
offset_header = 4*7;
|
||||
offset_char_info = 4*(7+tfm->nt+lh);
|
||||
}
|
||||
else if (lf == 0)
|
||||
{
|
||||
/* Omega Metric File */
|
||||
tfm->type = METRIC_TYPE_OFM;
|
||||
tfm->type_aux = READ_INT2(fp); /* ofm_level */
|
||||
if ((tfm->type_aux < 0) || (1 < tfm->type_aux))
|
||||
tfm->type_aux = 0; /* broken, maybe */
|
||||
lf = READ_UINT4(fp);
|
||||
lh = READ_UINT4(fp);
|
||||
if (tfm->type_aux == 0)
|
||||
{ /* level 0 OFM */
|
||||
offset_header = 4*14;
|
||||
offset_char_info = 4*(14+lh);
|
||||
}
|
||||
else
|
||||
{ /* level 1 OFM: *** NOT SUPPORTED YET *** */
|
||||
offset_header = 4*29;
|
||||
offset_char_info = 4*(29+lh);
|
||||
}
|
||||
}
|
||||
else
|
||||
{ }
|
||||
#endif
|
||||
/* Traditional TeX Metric File */
|
||||
lh = (int)READ_UINT2( stream );
|
||||
offset_header = 4*6;
|
||||
offset_char_info = 4*(6+lh);
|
||||
|
||||
#if 0
|
||||
if (tfm->type == METRIC_TYPE_OFM)
|
||||
{
|
||||
tfm->begin_char = READ_UINT4(fp);
|
||||
tfm->end_char = READ_UINT4(fp);
|
||||
nw = READ_UINT4(fp);
|
||||
nh = READ_UINT4(fp);
|
||||
nd = READ_UINT4(fp);
|
||||
|
||||
ni = READ_UINT4(fp);
|
||||
nl = READ_UINT4(fp);
|
||||
nk = READ_UINT4(fp);
|
||||
neng = READ_UINT4(fp);
|
||||
np = READ_UINT4(fp);
|
||||
dir = READ_UINT4(fp);
|
||||
|
||||
if (((signed)(tfm->begin_char-1) > (signed)tfm->end_char) ||
|
||||
(tfm->end_char > 65535))
|
||||
{
|
||||
error = FT_THROW( Invalid_Argument );
|
||||
goto Exit;
|
||||
}
|
||||
}
|
||||
else
|
||||
{ }
|
||||
#endif
|
||||
fi->begin_char = (int)READ_UINT2( stream );
|
||||
fi->end_char = (int)READ_UINT2( stream );
|
||||
|
||||
nw = (UINT4)READ_UINT2( stream );
|
||||
nh = (UINT4)READ_UINT2( stream );
|
||||
nd = (UINT4)READ_UINT2( stream );
|
||||
|
||||
ni = (UINT4)READ_UINT2( stream );
|
||||
nl = (UINT4)READ_UINT2( stream );
|
||||
nk = (UINT4)READ_UINT2( stream );
|
||||
neng = (UINT4)READ_UINT2( stream );
|
||||
np = (UINT4)READ_UINT2( stream );
|
||||
|
||||
#if 0
|
||||
if (tfm->type == METRIC_TYPE_TFM)
|
||||
{}
|
||||
#endif
|
||||
if (((signed)(fi->begin_char-1) > (signed)fi->end_char) ||
|
||||
(fi->end_char > 255))
|
||||
{
|
||||
error = FT_THROW( Invalid_Argument );
|
||||
goto Exit;
|
||||
}
|
||||
|
||||
/* fseek(fp, offset_header, SEEK_SET); */
|
||||
if (FT_STREAM_SEEK( offset_header ) )
|
||||
goto Exit;
|
||||
fi->cs = READ_UINT4( stream );
|
||||
fi->ds = READ_UINT4( stream );
|
||||
fi->design_size = (double)(fi->ds)/(double)(1<<20);
|
||||
|
||||
nc = fi->end_char - fi->begin_char + 1;
|
||||
nci = nc;
|
||||
#if 0
|
||||
if (tfm->type == METRIC_TYPE_OFM)
|
||||
nci *= 2;
|
||||
#endif
|
||||
ci = (UINT4*)calloc(nci, sizeof(UINT4));
|
||||
w = (INT4*)calloc(nw, sizeof(UINT4));
|
||||
h = (INT4*)calloc(nh, sizeof(UINT4));
|
||||
d = (INT4*)calloc(nd, sizeof(UINT4));
|
||||
if ((ci == NULL) || (w == NULL) || (h == NULL) || (d == NULL))
|
||||
{
|
||||
error = FT_THROW( Invalid_Argument );
|
||||
goto Exit;
|
||||
}
|
||||
/* fseek(fp, offset_char_info, SEEK_SET); */
|
||||
if( FT_STREAM_SEEK( offset_char_info ) )
|
||||
goto Exit;
|
||||
for (i = 0; i < nci; i++)
|
||||
ci[i] = READ_UINT4( stream );
|
||||
|
||||
/* offset_param = ftell(fp) + 4*(nw + nh + nd + ni + nl + nk + neng); */
|
||||
offset_param = stream->pos + 4*(nw + nh + nd + ni + nl + nk + neng);
|
||||
|
||||
for (i = 0; i < nw; i++)
|
||||
w[i] = READ_INT4( stream );
|
||||
for (i = 0; i < nh; i++)
|
||||
h[i] = READ_INT4( stream );
|
||||
for (i = 0; i < nd; i++)
|
||||
d[i] = READ_INT4( stream );
|
||||
|
||||
fi->width = (INT4*)calloc(nc, sizeof(INT4));
|
||||
fi->height = (INT4*)calloc(nc, sizeof(INT4));
|
||||
fi->depth = (INT4*)calloc(nc, sizeof(INT4));
|
||||
if ((fi->width == NULL) || (fi->height == NULL) || (fi->depth == NULL))
|
||||
{
|
||||
error = FT_THROW( Invalid_Argument );
|
||||
goto Exit;
|
||||
}
|
||||
bbxw = 0;
|
||||
bbxh = 0;
|
||||
xoff = 0;
|
||||
yoff = 0;
|
||||
#if 0
|
||||
if (tfm->type == METRIC_TYPE_OFM)
|
||||
{
|
||||
for (i = 0; i < nc; i++)
|
||||
{
|
||||
v = ci[2*i];
|
||||
tfm->depth[i] = d[v & 0xff]; v >>= 8;
|
||||
tfm->height[i] = h[v & 0xff]; v >>= 8;
|
||||
tfm->width[i] = w[v & 0xffff];
|
||||
if (bbxw < tfm->width[i])
|
||||
bbxw = tfm->width[i];
|
||||
if (bbxh < (tfm->height[i] + tfm->depth[i]))
|
||||
bbxh = tfm->height[i] + tfm->depth[i];
|
||||
if (yoff > -tfm->depth[i])
|
||||
yoff = -tfm->depth[i];
|
||||
#if 0
|
||||
printf("** %.3f %.3f %.3f\n",
|
||||
(double)tfm->width[i]/(double)(1<<20),
|
||||
(double)tfm->height[i]/(double)(1<<20),
|
||||
(double)tfm->depth[i]/(double)(1<<20));
|
||||
#endif
|
||||
}
|
||||
}
|
||||
else
|
||||
{ }
|
||||
#endif
|
||||
for (i = 0; i < nc; i++)
|
||||
{
|
||||
v = ci[i] / 0x10000L;
|
||||
fi->depth[i] = d[v & 0xf]; v >>= 4;
|
||||
fi->height[i] = h[v & 0xf]; v >>= 4;
|
||||
fi->width[i] = w[v & 0xff];
|
||||
if (bbxw < fi->width[i])
|
||||
bbxw = fi->width[i];
|
||||
if (bbxh < (fi->height[i] + fi->depth[i]))
|
||||
bbxh = fi->height[i] + fi->depth[i];
|
||||
if (yoff > -fi->depth[i])
|
||||
yoff = -fi->depth[i];
|
||||
#if 0
|
||||
printf("** %.3f %.3f\n",
|
||||
(double)tfm->height[i]/(double)(1<<20),
|
||||
(double)tfm->depth[i]/(double)(1<<20));
|
||||
#endif
|
||||
}
|
||||
fi->font_bbx_w = fi->design_size * ((double)bbxw / (double)(1<<20));
|
||||
fi->font_bbx_h = fi->design_size * ((double)bbxh / (double)(1<<20));
|
||||
fi->font_bbx_xoff = fi->design_size * ((double)xoff / (double)(1<<20));
|
||||
fi->font_bbx_yoff = fi->design_size * ((double)yoff / (double)(1<<20));
|
||||
|
||||
#if 0
|
||||
if (tfm->type == METRIC_TYPE_JFM)
|
||||
{
|
||||
fseek(fp, 4*(7+lh), SEEK_SET);
|
||||
tfm->ct_kcode = (unsigned int*)calloc(tfm->nt+1, sizeof(unsigned int));
|
||||
tfm->ct_ctype = (unsigned int*)calloc(tfm->nt+1, sizeof(unsigned int));
|
||||
if ((tfm->ct_kcode == NULL) || (tfm->ct_ctype == NULL))
|
||||
{
|
||||
error = FT_THROW( Invalid_Argument );
|
||||
goto Exit;
|
||||
}
|
||||
for (i = 0; i < tfm->nt; i++)
|
||||
{
|
||||
v = READ_UINT4(fp);
|
||||
tfm->ct_kcode[i] = v/0x10000L;
|
||||
tfm->ct_ctype[i] = v%0x10000L;
|
||||
}
|
||||
tfm->ct_kcode[tfm->nt] = 0; /* sentinel */
|
||||
tfm->ct_ctype[tfm->nt] = 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* fseek(fp, offset_param, SEEK_SET); */
|
||||
if( FT_STREAM_SEEK( offset_param ) )
|
||||
return error; /* To be changed */
|
||||
if (FT_READ_ULONG(fi->slant) )
|
||||
return error;
|
||||
fi->slant = (double)fi->slant/(double)(1<<20);
|
||||
|
||||
Exit:
|
||||
FT_FREE(ci);
|
||||
FT_FREE(w);
|
||||
FT_FREE(h);
|
||||
FT_FREE(d);
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
/* END */
|
||||
|
|
@ -0,0 +1,56 @@
|
|||
/****************************************************************************
|
||||
*
|
||||
* tfmobjs.h
|
||||
*
|
||||
* FreeType auxiliary TFM module.
|
||||
*
|
||||
* Copyright 1996-2018 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.
|
||||
*
|
||||
*/
|
||||
|
||||
|
||||
#ifndef TFMOBJS_H_
|
||||
#define TFMOBJS_H_
|
||||
|
||||
#include <ft2build.h>
|
||||
#include "tfmmod.h"
|
||||
|
||||
FT_BEGIN_HEADER
|
||||
|
||||
|
||||
#include <ft2build.h>
|
||||
#include FT_INTERNAL_TFM_H
|
||||
|
||||
|
||||
FT_BEGIN_HEADER
|
||||
|
||||
/* Initialise the TFM stream */
|
||||
FT_LOCAL( FT_Error )
|
||||
tfm_init( TFM_Parser parser,
|
||||
FT_Memory memory
|
||||
FT_Stream stream );
|
||||
|
||||
/* Parse TFM metric data */
|
||||
FT_LOCAL( FT_Error )
|
||||
tfm_parse_metrics( TFM_Parser parser );
|
||||
|
||||
FT_LOCAL( FT_Error )
|
||||
tfm_parse_kerns( TFM_Parser parser );
|
||||
|
||||
FT_LOCAL( void )
|
||||
tfm_close( TFM_Parser parser );
|
||||
|
||||
|
||||
FT_END_HEADER
|
||||
|
||||
#endif /* TFMOBJS_H_ */
|
||||
|
||||
|
||||
/* END */
|
||||
Loading…
Reference in New Issue