void sp_layer(DviContext *dvi, const char *prefix, const char *arg)
{
if(STREQ("push", arg))
dvi->curr_layer++;
else if(STREQ("pop", arg)) {
if(dvi->curr_layer)
dvi->curr_layer--;
else
mdvi_warning(_("%s: tried to pop top level layer\n"),
dvi->filename);
} else if(STREQ("reset", arg))
dvi->curr_layer = 0;
DEBUG((DBG_SPECIAL, "Layer level: %d\n", dvi->curr_layer));
}
void font_finish_definitions(DviContext *dvi)
{
int count;
DviFontRef **map, *ref;
/* first get rid of unused fonts */
font_free_unused(&dvi->device);
if(dvi->fonts == NULL) {
mdvi_warning(_("%s: no fonts defined\n"), dvi->filename);
return;
}
map = xnalloc(DviFontRef *, dvi->nfonts);
for(count = 0, ref = dvi->fonts; ref; ref = ref->next)
map[count++] = ref;
/* sort the array by font id */
qsort(map, dvi->nfonts, sizeof(DviFontRef *), compare_refs);
dvi->fontmap = map;
}
/* Note: the given strings are modified in place */
static char *parse_epsf_special(EpsfBox *box, char **ret,
char *prefix, char *arg)
{
static struct {
char *name;
int has_arg;
char *value;
} keys[] = {
{"llx", 1, "0"},
{"lly", 1, "0"},
{"urx", 1, "0"},
{"ury", 1, "0"},
{"rwi", 1, "0"},
{"rhi", 1, "0"},
{"hoffset", 1, "0"},
{"voffset", 1, "0"},
{"hsize", 1, "612"},
{"vsize", 1, "792"},
{"hscale", 1, "100"},
{"vscale", 1, "100"},
{"angle", 1, "0"},
{"clip", 0, "0"}
};
#define NKEYS (sizeof(keys) / sizeof(keys[0]))
char *ptr;
char *filename;
double value[NKEYS];
Uchar present[NKEYS];
Buffer buffer;
char *name;
int i;
double originx;
double originy;
double hsize;
double vsize;
double hscale;
double vscale;
/* this special has the form
* ["]file.ps["] [key=valye]*
*/
/* scan the filename */
while(*arg == ' ' || *arg == '\t')
arg++;
/* make a copy of the string */
ptr = arg;
if(*ptr == '"')
for(name = ++ptr; *ptr && *ptr != '"'; ptr++);
else
for(name = ptr; *ptr && *ptr != ' ' && *ptr != '\t'; ptr++);
if(ptr == name)
return NULL;
*ptr++ = 0;
filename = name;
/* reset values to defaults */
for(i = 0; i < NKEYS; i++) {
value[i] = atof(keys[i].value);
present[i] = 0;
}
buff_init(&buffer);
buff_add(&buffer, "@beginspecial ", 0);
while(*ptr) {
const char *keyname;
char *val;
char *p;
while(*ptr == ' ' || *ptr == '\t')
ptr++;
keyname = ptr;
/* get the whole key=value pair */
for(; *ptr && *ptr != ' ' && *ptr != '\t'; ptr++);
if(*ptr) *ptr++ = 0;
/* now we shouldn't touch `ptr' anymore */
/* now work on this pair */
p = strchr(keyname, '=');
if(p == NULL)
val = NULL;
else {
*p++ = 0;
if(*p == '"') {
val = ++p;
/* skip until closing quote */
while(*p && *p != '"')
p++;
if(*p != '"')
mdvi_warning(
_("%s: malformed value for key `%s'\n"),
filename, keyname);
} else
val = p;
}
/* lookup the key */
for(i = 0; i < NKEYS; i++)
if(STRCEQ(keys[i].name, keyname))
break;
if(i == NKEYS) {
mdvi_warning(_("%s: unknown key `%s' ignored\n"),
filename, keyname);
continue;
}
if(keys[i].has_arg && val == NULL) {
mdvi_warning(_("%s: no argument for key `%s', using defaults\n"),
filename, keyname);
val = keys[i].value;
} else if(!keys[i].has_arg && val) {
mdvi_warning(_("%s: argument `%s' ignored for key `%s'\n"),
filename, val, keyname);
val = NULL;
}
if(val)
value[i] = atof(val);
/* put the argument */
buff_add(&buffer, val, 0);
buff_add(&buffer, " @", 2);
buff_add(&buffer, keyname, 0);
buff_add(&buffer, " ", 1);
/* remember that this option was given */
present[i] = 0xff;
}
buff_add(&buffer, " @setspecial", 0);
/* now compute the bounding box (code comes from dvips) */
originx = 0;
originy = 0;
hscale = 1;
vscale = 1;
hsize = 0;
vsize = 0;
if(present[HSIZE])
hsize = value[HSIZE];
if(present[VSIZE])
vsize = value[VSIZE];
if(present[HOFF])
originx = value[HOFF];
if(present[VOFF])
originy = value[VOFF];
if(present[HSCALE])
hscale = value[HSCALE] / 100.0;
if(present[VSCALE])
vscale = value[VSCALE] / 100.0;
if(present[URX] && present[LLX])
hsize = value[URX] - value[LLX];
if(present[URY] && present[LLY])
vsize = value[URY] - value[LLY];
if(present[RWI] || present[RHI]) {
if(present[RWI] && !present[RHI])
hscale = vscale = value[RWI] / (10.0 * hsize);
else if(present[RHI] && !present[RWI])
hscale = vscale = value[RHI] / (10.0 * vsize);
else {
hscale = value[RWI] / (10.0 * hsize);
vscale = value[RHI] / (10.0 * vsize);
}
}
box->ox = originx;
box->oy = originy;
box->bw = hsize * hscale;
box->bh = vsize * vscale;
box->angle = value[ANGLE];
*ret = buffer.data;
return filename;
}
static int gf_load_font(DviParams *unused, DviFont *font)
{
int i;
int n;
int loc;
int hic;
FILE *p;
Int32 word;
int op;
long alpha, beta, z;
#ifndef NODEBUG
char s[256];
#endif
p = font->in;
/* check preamble */
loc = fuget1(p); hic = fuget1(p);
if(loc != GF_PRE || hic != GF_ID)
goto badgf;
loc = fuget1(p);
#ifndef NODEBUG
for(i = 0; i < loc; i++)
s[i] = fuget1(p);
s[i] = 0;
DEBUG((DBG_FONTS, "(gf) %s: %s\n", font->fontname, s));
#else
fseek(p, (long)loc, SEEK_CUR);
#endif
/* now read character locators in postamble */
if(fseek(p, (long)-1, SEEK_END) == -1)
return -1;
n = 0;
while((op = fuget1(p)) == GF_TRAILER) {
if(fseek(p, (long)-2, SEEK_CUR) < 0)
break;
n++;
}
if(op != GF_ID || n < 4)
goto badgf;
/* get the pointer to the postamble */
fseek(p, (long)-5, SEEK_CUR);
op = fuget4(p);
/* jump to it */
fseek(p, (long)op, SEEK_SET);
if(fuget1(p) != GF_POST)
goto badgf;
/* skip pointer to last EOC */
fuget4(p);
/* get the design size */
font->design = fuget4(p);
/* the checksum */
word = fuget4(p);
if(word && font->checksum && font->checksum != word) {
mdvi_warning(_("%s: bad checksum (expected %u, found %u)\n"),
font->fontname, font->checksum, word);
} else if(!font->checksum)
font->checksum = word;
/* skip pixels per point ratio */
fuget4(p);
fuget4(p);
font->chars = xnalloc(DviFontChar, 256);
for(loc = 0; loc < 256; loc++)
font->chars[loc].offset = 0;
/* skip glyph "bounding box" */
fseek(p, (long)16, SEEK_CUR);
loc = 256;
hic = -1;
TFMPREPARE(font->scale, z, alpha, beta);
while((op = fuget1(p)) != GF_POST_POST) {
DviFontChar *ch;
int cc;
/* get the character code */
cc = fuget1(p);
if(cc < loc)
loc = cc;
if(cc > hic)
hic = cc;
ch = &font->chars[cc];
switch(op) {
case GF_LOC:
fsget4(p); /* skip dx */
fsget4(p); /* skip dy */
break;
case GF_LOC0:
fuget1(p); /* skip dx */
/* dy assumed 0 */
break;
default:
mdvi_error(_("%s: junk in postamble\n"), font->fontname);
goto error;
}
ch->code = cc;
ch->tfmwidth = fuget4(p);
ch->tfmwidth = TFMSCALE(ch->tfmwidth, z, alpha, beta);
ch->offset = fuget4(p);
if(ch->offset == -1)
ch->offset = 0;
/* initialize the rest of the glyph information */
ch->x = 0;
ch->y = 0;
ch->width = 0;
ch->height = 0;
ch->glyph.data = NULL;
ch->shrunk.data = NULL;
ch->grey.data = NULL;
ch->flags = 0;
ch->loaded = 0;
}
if(op != GF_POST_POST)
goto badgf;
if(loc > 0 || hic < 255) {
/* shrink to optimal size */
memmove(font->chars, font->chars + loc,
(hic - loc + 1) * sizeof(DviFontChar));
font->chars = xresize(font->chars,
DviFontChar, hic - loc + 1);
}
font->loc = loc;
font->hic = hic;
return 0;
badgf:
mdvi_error(_("%s: File corrupted, or not a GF file\n"), font->fontname);
error:
if(font->chars) {
mdvi_free(font->chars);
font->chars = NULL;
}
font->loc = font->hic = 0;
return -1;
}