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/* $Header$
This is dvipdfm, a DVI to PDF translator.
Copyright (C) 1998, 1999 by Mark A. Wicks
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
The author may be contacted via the e-mail address
mwicks@kettering.edu
*/
#include <stdlib.h>
#include "system.h"
#include "mem.h"
#include "pdfdev.h"
#include "pdfparse.h"
#include "pdfspecial.h"
#include "dvipdfm.h"
static char ignore_colors = 0;
void color_special_ignore_colors(void)
{
ignore_colors = 1;
}
static void do_color_special (char **start, char *end)
{
char *command, *token;
char *c1=NULL, *c2=NULL, *c3=NULL, *c4=NULL;
skip_white (start, end);
if ((command = parse_ident (start, end))) {
if (!strcmp (command, "push")) { /* Handle a push */
skip_white (start, end);
if ((token = parse_ident (start, end))) {
if (!strcmp (token, "rgb")) { /* Handle rgb color */
if ((c1=parse_number(start, end)) &&
(c2=parse_number(start, end)) &&
(c3=parse_number(start, end))) {
dev_begin_rgb_color (atof(c1), atof(c2), atof(c3));
}
}
else if (!strcmp (token, "cmyk")) { /* Handle rgb color */
if ((c1=parse_number(start, end)) &&
(c2=parse_number(start, end)) &&
(c3=parse_number(start, end)) &&
(c4=parse_number(start, end))) {
dev_begin_cmyk_color (atof(c1), atof(c2), atof(c3), atof(c4));
}
} else if (!strcmp (token, "gray")) { /* Handle gray */
if ((c1=parse_number(start, end))) {
dev_begin_gray (atof(c1));
}
} else if (!strcmp (token, "hsb")) {
fprintf (stderr, "\ncolor special: hsb not implemented\n");
} else { /* Must be a "named" color */
dev_begin_named_color (token);
}
if (c1) RELEASE(c1);
if (c2) RELEASE(c2);
if (c3) RELEASE(c3);
if (c4) RELEASE(c4);
RELEASE (token);
}
} else if (!strcmp (command, "pop")) { /* Handle a pop */
dev_end_color();
} else { /* Assume this is a default color change */
token = command;
if (!strcmp (token, "rgb")) { /* Handle rgb color */
if ((c1=parse_number(start, end)) &&
(c2=parse_number(start, end)) &&
(c3=parse_number(start, end))) {
dev_set_def_rgb_color (atof(c1), atof(c2), atof(c3));
}
}
else if (!strcmp (token, "cmyk")) { /* Handle rgb color */
if ((c1=parse_number(start, end)) &&
(c2=parse_number(start, end)) &&
(c3=parse_number(start, end)) &&
(c4=parse_number(start, end))) {
dev_set_def_cmyk_color (atof(c1), atof(c2), atof(c3), atof(c4));
}
} else if (!strcmp (token, "gray")) { /* Handle gray */
if ((c1=parse_number(start, end))) {
dev_set_def_gray (atof(c1));
}
} else if (!strcmp (token, "hsb")) {
fprintf (stderr, "\ncolor special: hsb not implemented\n");
} else { /* Must be a "named" color */
dev_set_def_named_color (token);
}
if (c1) RELEASE(c1);
if (c2) RELEASE(c2);
if (c3) RELEASE(c3);
if (c4) RELEASE(c4);
}
}
RELEASE (command);
}
static void do_background_special (char **start, char *end)
{
char *token;
char *c1=NULL, *c2=NULL, *c3=NULL, *c4=NULL;
skip_white (start, end);
if ((token = parse_ident (start, end))) {
if (!strcmp (token, "rgb")) { /* Handle rgb color */
if ((c1=parse_number(start, end)) &&
(c2=parse_number(start, end)) &&
(c3=parse_number(start, end))) {
dev_bg_rgb_color (atof(c1), atof(c2), atof(c3));
}
}
else if (!strcmp (token, "cmyk")) { /* Handle rgb color */
if ((c1=parse_number(start, end)) &&
(c2=parse_number(start, end)) &&
(c3=parse_number(start, end)) &&
(c4=parse_number(start, end))) {
dev_bg_cmyk_color (atof(c1), atof(c2), atof(c3), atof(c4));
}
} else if (!strcmp (token, "gray")) { /* Handle gray */
if ((c1=parse_number(start, end))) {
dev_bg_gray (atof(c1));
}
} else if (!strcmp (token, "hsb")) {
fprintf (stderr, "\ncolor special: hsb not implemented\n");
} else { /* Must be a "named" color */
dev_bg_named_color (token);
}
if (c1) RELEASE(c1);
if (c2) RELEASE(c2);
if (c3) RELEASE(c3);
if (c4) RELEASE(c4);
RELEASE (token);
}
}
static void local_set_paper_size (char **start, char *end)
{
char *key, *val, *val_start, *val_end, *number;
char *save = *start;
double width = 0.0, height = 0.0, unit;
parse_key_val (start, end, &key, &val);
if (key && val) {
val_start = val;
val_end = val+strlen(val);
skip_white (&val_start, val_end);
if ((number=parse_number(&val_start, val_end))) {
width = atof (number);
RELEASE (number);
if ((unit = parse_one_unit (&val_start, val_end)) > 0.0) {
width *= unit;
} else {
width = 0.0;
}
} else {
fprintf (stderr, "\nExpecting a number here\n");
dump (val_start, end);
}
skip_white (&val_start, val_end);
if (val_start < val_end && *(val_start++) == ',') {
skip_white (&val_start, val_end);
}
if ((number=parse_number(&val_start, val_end))) {
height = atof (number);
RELEASE (number);
if ((unit = parse_one_unit (&val_start, val_end)) > 0.0) {
height *= unit;
} else {
height = 0.0;
}
} else {
fprintf (stderr, "\nExpecting a number here\n");
dump (val_start, val_end);
}
if (key) RELEASE (key);
if (val) RELEASE (val);
}
if (width != 0.0 && height != 0.0) {
dev_set_page_size (width, height);
} else{
fprintf (stderr, "\nError parsing papersize special\n");
dump (save, end);
}
}
/* Color_special() handles color specials and also
handles papersize and landscape specials since
there's no good place to put them */
int color_special (char *buffer, UNSIGNED_QUAD size)
{
char *start = buffer, *end;
int result = 0;
end = buffer + size;
skip_white (&start, end);
if (!strncmp (start, "color", strlen("color"))) {
start += strlen("color");
result = 1; /* This is a color special */
if (!ignore_colors)
do_color_special (&start, end);
} else if (!strncmp (start, "background", strlen("background"))) {
start += strlen("background");
result = 1; /* This is a color special */
if (!ignore_colors)
do_background_special (&start, end);
} else if (!strncmp (start, "landscape", strlen("landscape"))) {
set_landscape_mode();
result = 1;
} else if (!strncmp (start, "papersize", strlen("papersize"))) {
local_set_paper_size(&start, end);
result = 1;
}
return result;
}
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