1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/* ltsh.c -- Linear Threshold table
* Copyright (C) 1996 Li-Da Lho, All right reserved
*/
#include <stdio.h>
#include <stdlib.h>
#include "config.h"
#include "ttf.h"
#include "ttfutil.h"
#ifdef MEMCHECK
#include <dmalloc.h>
#endif
/* $Id: ltsh.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $ */
#ifndef lint
static char vcid[] = "$Id: ltsh.c,v 1.1.1.1 1998/06/05 07:47:52 robert Exp $";
#endif /* lint */
static LTSHPtr ttfAllocLTSH(TTFontPtr font);
static void ttfLoadLTSH(FILE *fp,LTSHPtr ltsh,ULONG offset);
void ttfInitLTSH(TTFontPtr font)
{
ULONG tag = 'L' | 'T' << 8 | 'S' << 16 | 'H' << 24;
TableDirPtr ptd;
if ((ptd = ttfLookUpTableDir(tag,font)) != NULL)
{
font->ltsh = ttfAllocLTSH(font);
ttfLoadLTSH(font->fp,font->ltsh,ptd->offset);
}
}
static LTSHPtr ttfAllocLTSH(TTFontPtr font)
{
LTSHPtr ltsh;
if ((ltsh = (LTSHPtr) calloc(1,sizeof(LTSH))) == NULL)
{
ttfError("Out of Memory in __FILE__:__LINE__\n");
return NULL;
}
return ltsh;
}
static void ttfLoadLTSH (FILE *fp,LTSHPtr ltsh,ULONG offset)
{
if (fseek(fp,offset,SEEK_SET) !=0)
ttfError("Fseek Failed in ttfLoadLTSH \n");
ltsh->version = ttfGetUSHORT(fp);
ltsh->numGlyphs = ttfGetUSHORT(fp);
ltsh->yPels = (BYTE *) calloc(ltsh->numGlyphs, sizeof(BYTE));
if(fread(ltsh->yPels, sizeof(BYTE), ltsh->numGlyphs, fp) != ltsh->numGlyphs)
ttfError("Error when getting yPels\n");
}
void ttfPrintLTSH(FILE *fp,LTSHPtr ltsh)
{
int i;
fprintf(fp,"'LTSH' Table - Linear Threshold Table\n");
fprintf(fp,"-------------------------------------\n");
fprintf(fp,"'LTSH' Version:\t %d\n",ltsh->version);
fprintf(fp,"Number of Glyphs:\t %d\n",ltsh->numGlyphs);
fprintf(fp,"\t Glyph # \t Threshold\n");
for (i=0;i<ltsh->numGlyphs;i++)
{
fprintf(fp,"\t %d. \t\t %d\n",i,ltsh->yPels[i]);
}
}
void ttfFreeLTSH(LTSHPtr ltsh)
{
if (ltsh != NULL)
{
free(ltsh->yPels);
free(ltsh);
}
}
|