mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
901 lines
18 KiB
C++
901 lines
18 KiB
C++
// -*- C++ -*-
|
|
/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
|
|
Written by James Clark (jjc@jclark.com)
|
|
|
|
This file is part of groff.
|
|
|
|
groff 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, or (at your option) any later
|
|
version.
|
|
|
|
groff 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 groff; see the file COPYING. If not, write to the Free Software
|
|
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
#include "driver.h"
|
|
#include "nonposix.h"
|
|
|
|
#define DEFAULT_LINEWIDTH 40
|
|
static int linewidth = DEFAULT_LINEWIDTH;
|
|
|
|
static int draw_flag = 1;
|
|
|
|
/* These values were chosen because:
|
|
|
|
(MULTIPLIER*SIZESCALE)/(RES*UNITWIDTH) == 1/(2^20 * 72.27)
|
|
|
|
and 57816 is an exact multiple of both 72.27*SIZESCALE and 72.
|
|
|
|
The width in the groff font file is the product of MULTIPLIER and the
|
|
width in the tfm file. */
|
|
|
|
#define RES 57816
|
|
#define RES_7227 (RES/7227)
|
|
#define UNITWIDTH 131072
|
|
#define SIZESCALE 100
|
|
#define MULTIPLIER 1
|
|
|
|
#define FILL_MAX 1000
|
|
|
|
class dvi_font : public font {
|
|
dvi_font(const char *);
|
|
public:
|
|
int checksum;
|
|
int design_size;
|
|
~dvi_font();
|
|
void handle_unknown_font_command(const char *command, const char *arg,
|
|
const char *filename, int lineno);
|
|
static dvi_font *load_dvi_font(const char *);
|
|
};
|
|
|
|
dvi_font *dvi_font::load_dvi_font(const char *s)
|
|
{
|
|
dvi_font *f = new dvi_font(s);
|
|
if (!f->load()) {
|
|
delete f;
|
|
return 0;
|
|
}
|
|
return f;
|
|
}
|
|
|
|
dvi_font::dvi_font(const char *nm)
|
|
: font(nm), checksum(0), design_size(0)
|
|
{
|
|
}
|
|
|
|
dvi_font::~dvi_font()
|
|
{
|
|
}
|
|
|
|
void dvi_font::handle_unknown_font_command(const char *command,
|
|
const char *arg,
|
|
const char *filename, int lineno)
|
|
{
|
|
char *ptr;
|
|
if (strcmp(command, "checksum") == 0) {
|
|
if (arg == 0)
|
|
fatal_with_file_and_line(filename, lineno,
|
|
"`checksum' command requires an argument");
|
|
checksum = int(strtol(arg, &ptr, 10));
|
|
if (checksum == 0 && ptr == arg) {
|
|
fatal_with_file_and_line(filename, lineno, "bad checksum");
|
|
}
|
|
}
|
|
else if (strcmp(command, "designsize") == 0) {
|
|
if (arg == 0)
|
|
fatal_with_file_and_line(filename, lineno,
|
|
"`designsize' command requires an argument");
|
|
design_size = int(strtol(arg, &ptr, 10));
|
|
if (design_size == 0 && ptr == arg) {
|
|
fatal_with_file_and_line(filename, lineno, "bad design size");
|
|
}
|
|
}
|
|
}
|
|
|
|
#define FONTS_MAX 256
|
|
|
|
struct output_font {
|
|
dvi_font *f;
|
|
int point_size;
|
|
output_font() : f(0) { }
|
|
};
|
|
|
|
class dvi_printer : public printer {
|
|
FILE *fp;
|
|
int max_drift;
|
|
int byte_count;
|
|
int last_bop;
|
|
int page_count;
|
|
int cur_h;
|
|
int cur_v;
|
|
int end_h;
|
|
int max_h;
|
|
int max_v;
|
|
output_font output_font_table[FONTS_MAX];
|
|
font *cur_font;
|
|
int cur_point_size;
|
|
int pushed;
|
|
int pushed_h;
|
|
int pushed_v;
|
|
int have_pushed;
|
|
void preamble();
|
|
void postamble();
|
|
void define_font(int);
|
|
void set_font(int);
|
|
void possibly_begin_line();
|
|
protected:
|
|
enum {
|
|
id_byte = 2,
|
|
set1 = 128,
|
|
put1 = 133,
|
|
put_rule = 137,
|
|
bop = 139,
|
|
eop = 140,
|
|
push = 141,
|
|
pop = 142,
|
|
right1 = 143,
|
|
down1 = 157,
|
|
fnt_num_0 = 171,
|
|
fnt1 = 235,
|
|
xxx1 = 239,
|
|
fnt_def1 = 243,
|
|
pre = 247,
|
|
post = 248,
|
|
post_post = 249,
|
|
filler = 223
|
|
};
|
|
int line_thickness;
|
|
|
|
void out1(int);
|
|
void out2(int);
|
|
void out3(int);
|
|
void out4(int);
|
|
void moveto(int, int);
|
|
void out_string(const char *);
|
|
void out_signed(unsigned char, int);
|
|
void out_unsigned(unsigned char, int);
|
|
void do_special(const char *);
|
|
public:
|
|
dvi_printer();
|
|
~dvi_printer();
|
|
font *make_font(const char *);
|
|
void begin_page(int);
|
|
void end_page(int);
|
|
void set_char(int, font *, const environment *, int w, const char *name);
|
|
void special(char *arg, const environment *env);
|
|
void end_of_line();
|
|
void draw(int code, int *p, int np, const environment *env);
|
|
};
|
|
|
|
|
|
class draw_dvi_printer : public dvi_printer {
|
|
int output_pen_size;
|
|
int fill;
|
|
void set_line_thickness(const environment *);
|
|
void fill_next();
|
|
public:
|
|
draw_dvi_printer();
|
|
~draw_dvi_printer();
|
|
void draw(int code, int *p, int np, const environment *env);
|
|
void end_page(int);
|
|
};
|
|
|
|
dvi_printer::dvi_printer()
|
|
: fp(stdout), byte_count(0), last_bop(-1), page_count(0), max_h(0), max_v(0),
|
|
cur_font(0), cur_point_size(-1), pushed(0), line_thickness(-1)
|
|
{
|
|
if (font::res != RES)
|
|
fatal("resolution must be %1", RES);
|
|
if (font::unitwidth != UNITWIDTH)
|
|
fatal("unitwidth must be %1", UNITWIDTH);
|
|
if (font::hor != 1)
|
|
fatal("hor must be equal to 1");
|
|
if (font::vert != 1)
|
|
fatal("vert must be equal to 1");
|
|
if (font::sizescale != SIZESCALE)
|
|
fatal("sizescale must be equal to %1", SIZESCALE);
|
|
max_drift = font::res/1000; // this is fairly arbitrary
|
|
preamble();
|
|
}
|
|
|
|
dvi_printer::~dvi_printer()
|
|
{
|
|
postamble();
|
|
}
|
|
|
|
|
|
draw_dvi_printer::draw_dvi_printer()
|
|
: output_pen_size(-1), fill(FILL_MAX)
|
|
{
|
|
}
|
|
|
|
draw_dvi_printer::~draw_dvi_printer()
|
|
{
|
|
}
|
|
|
|
|
|
void dvi_printer::out1(int n)
|
|
{
|
|
byte_count += 1;
|
|
putc(n & 0xff, fp);
|
|
}
|
|
|
|
void dvi_printer::out2(int n)
|
|
{
|
|
byte_count += 2;
|
|
putc((n >> 8) & 0xff, fp);
|
|
putc(n & 0xff, fp);
|
|
}
|
|
|
|
void dvi_printer::out3(int n)
|
|
{
|
|
byte_count += 3;
|
|
putc((n >> 16) & 0xff, fp);
|
|
putc((n >> 8) & 0xff, fp);
|
|
putc(n & 0xff, fp);
|
|
}
|
|
|
|
void dvi_printer::out4(int n)
|
|
{
|
|
byte_count += 4;
|
|
putc((n >> 24) & 0xff, fp);
|
|
putc((n >> 16) & 0xff, fp);
|
|
putc((n >> 8) & 0xff, fp);
|
|
putc(n & 0xff, fp);
|
|
}
|
|
|
|
void dvi_printer::out_string(const char *s)
|
|
{
|
|
out1(strlen(s));
|
|
while (*s != 0)
|
|
out1(*s++);
|
|
}
|
|
|
|
|
|
void dvi_printer::end_of_line()
|
|
{
|
|
if (pushed) {
|
|
out1(pop);
|
|
pushed = 0;
|
|
cur_h = pushed_h;
|
|
cur_v = pushed_v;
|
|
}
|
|
}
|
|
|
|
void dvi_printer::possibly_begin_line()
|
|
{
|
|
if (!pushed) {
|
|
have_pushed = pushed = 1;
|
|
pushed_h = cur_h;
|
|
pushed_v = cur_v;
|
|
out1(push);
|
|
}
|
|
}
|
|
|
|
int scale(int x, int z)
|
|
{
|
|
int sw;
|
|
int a, b, c, d;
|
|
int alpha, beta;
|
|
alpha = 16*z; beta = 16;
|
|
while (z >= 040000000L) {
|
|
z /= 2; beta /= 2;
|
|
}
|
|
d = x & 255;
|
|
c = (x >> 8) & 255;
|
|
b = (x >> 16) & 255;
|
|
a = (x >> 24) & 255;
|
|
sw = (((((d * z) / 0400) + (c * z)) / 0400) + (b * z)) / beta;
|
|
if (a == 255)
|
|
sw -= alpha;
|
|
else
|
|
assert(a == 0);
|
|
return sw;
|
|
}
|
|
|
|
|
|
void dvi_printer::set_char(int index, font *f, const environment *env, int w, const char *name)
|
|
{
|
|
int code = f->get_code(index);
|
|
if (env->size != cur_point_size || f != cur_font) {
|
|
cur_font = f;
|
|
cur_point_size = env->size;
|
|
int i;
|
|
for (i = 0;; i++) {
|
|
if (i >= FONTS_MAX) {
|
|
fatal("too many output fonts required");
|
|
}
|
|
if (output_font_table[i].f == 0) {
|
|
output_font_table[i].f = (dvi_font *)cur_font;
|
|
output_font_table[i].point_size = cur_point_size;
|
|
define_font(i);
|
|
}
|
|
if (output_font_table[i].f == cur_font
|
|
&& output_font_table[i].point_size == cur_point_size)
|
|
break;
|
|
}
|
|
set_font(i);
|
|
}
|
|
int distance = env->hpos - cur_h;
|
|
if (env->hpos != end_h && distance != 0) {
|
|
out_signed(right1, distance);
|
|
cur_h = env->hpos;
|
|
}
|
|
else if (distance > max_drift) {
|
|
out_signed(right1, distance - max_drift);
|
|
cur_h = env->hpos - max_drift;
|
|
}
|
|
else if (distance < -max_drift) {
|
|
out_signed(right1, distance + max_drift);
|
|
cur_h = env->hpos + max_drift;
|
|
}
|
|
if (env->vpos != cur_v) {
|
|
out_signed(down1, env->vpos - cur_v);
|
|
cur_v = env->vpos;
|
|
}
|
|
possibly_begin_line();
|
|
end_h = env->hpos + w;
|
|
cur_h += scale(f->get_width(index, UNITWIDTH)/MULTIPLIER,
|
|
cur_point_size*RES_7227);
|
|
if (cur_h > max_h)
|
|
max_h = cur_h;
|
|
if (cur_v > max_v)
|
|
max_v = cur_v;
|
|
if (code >= 0 && code <= 127)
|
|
out1(code);
|
|
else
|
|
out_unsigned(set1, code);
|
|
}
|
|
|
|
void dvi_printer::define_font(int i)
|
|
{
|
|
out_unsigned(fnt_def1, i);
|
|
dvi_font *f = output_font_table[i].f;
|
|
out4(f->checksum);
|
|
out4(output_font_table[i].point_size*RES_7227);
|
|
out4(int((double(f->design_size)/(1<<20))*RES_7227*100 + .5));
|
|
const char *nm = f->get_internal_name();
|
|
out1(0);
|
|
out_string(nm);
|
|
}
|
|
|
|
void dvi_printer::set_font(int i)
|
|
{
|
|
if (i >= 0 && i <= 63)
|
|
out1(fnt_num_0 + i);
|
|
else
|
|
out_unsigned(fnt1, i);
|
|
}
|
|
|
|
void dvi_printer::out_signed(unsigned char base, int param)
|
|
{
|
|
if (-128 <= param && param < 128) {
|
|
out1(base);
|
|
out1(param);
|
|
}
|
|
else if (-32768 <= param && param < 32768) {
|
|
out1(base+1);
|
|
out2(param);
|
|
}
|
|
else if (-(1 << 23) <= param && param < (1 << 23)) {
|
|
out1(base+2);
|
|
out3(param);
|
|
}
|
|
else {
|
|
out1(base+3);
|
|
out4(param);
|
|
}
|
|
}
|
|
|
|
void dvi_printer::out_unsigned(unsigned char base, int param)
|
|
{
|
|
if (param >= 0) {
|
|
if (param < 256) {
|
|
out1(base);
|
|
out1(param);
|
|
}
|
|
else if (param < 65536) {
|
|
out1(base+1);
|
|
out2(param);
|
|
}
|
|
else if (param < (1 << 24)) {
|
|
out1(base+2);
|
|
out3(param);
|
|
}
|
|
else {
|
|
out1(base+3);
|
|
out4(param);
|
|
}
|
|
}
|
|
else {
|
|
out1(base+3);
|
|
out4(param);
|
|
}
|
|
}
|
|
|
|
void dvi_printer::preamble()
|
|
{
|
|
out1(pre);
|
|
out1(id_byte);
|
|
out4(254000);
|
|
out4(font::res);
|
|
out4(1000);
|
|
out1(0);
|
|
}
|
|
|
|
void dvi_printer::postamble()
|
|
{
|
|
int tem = byte_count;
|
|
out1(post);
|
|
out4(last_bop);
|
|
out4(254000);
|
|
out4(font::res);
|
|
out4(1000);
|
|
out4(max_v);
|
|
out4(max_h);
|
|
out2(have_pushed); // stack depth
|
|
out2(page_count);
|
|
int i;
|
|
for (i = 0; i < FONTS_MAX && output_font_table[i].f != 0; i++)
|
|
define_font(i);
|
|
out1(post_post);
|
|
out4(tem);
|
|
out1(id_byte);
|
|
for (i = 0; i < 4 || byte_count % 4 != 0; i++)
|
|
out1(filler);
|
|
}
|
|
|
|
void dvi_printer::begin_page(int i)
|
|
{
|
|
page_count++;
|
|
int tem = byte_count;
|
|
out1(bop);
|
|
out4(i);
|
|
for (int j = 1; j < 10; j++)
|
|
out4(0);
|
|
out4(last_bop);
|
|
last_bop = tem;
|
|
// By convention position (0,0) in a dvi file is placed at (1in, 1in).
|
|
cur_h = font::res;
|
|
cur_v = font::res;
|
|
end_h = 0;
|
|
}
|
|
|
|
void dvi_printer::end_page(int)
|
|
{
|
|
if (pushed)
|
|
end_of_line();
|
|
out1(eop);
|
|
cur_font = 0;
|
|
}
|
|
|
|
void draw_dvi_printer::end_page(int len)
|
|
{
|
|
dvi_printer::end_page(len);
|
|
output_pen_size = -1;
|
|
}
|
|
|
|
void dvi_printer::do_special(const char *s)
|
|
{
|
|
int len = strlen(s);
|
|
if (len == 0)
|
|
return;
|
|
possibly_begin_line();
|
|
out_unsigned(xxx1, len);
|
|
while (*s)
|
|
out1(*s++);
|
|
}
|
|
|
|
void dvi_printer::special(char *arg, const environment *env)
|
|
{
|
|
moveto(env->hpos, env->vpos);
|
|
do_special(arg);
|
|
}
|
|
|
|
void dvi_printer::moveto(int h, int v)
|
|
{
|
|
if (h != cur_h) {
|
|
out_signed(right1, h - cur_h);
|
|
cur_h = h;
|
|
if (cur_h > max_h)
|
|
max_h = cur_h;
|
|
}
|
|
if (v != cur_v) {
|
|
out_signed(down1, v - cur_v);
|
|
cur_v = v;
|
|
if (cur_v > max_v)
|
|
max_v = cur_v;
|
|
}
|
|
end_h = 0;
|
|
}
|
|
|
|
void dvi_printer::draw(int code, int *p, int np, const environment *env)
|
|
{
|
|
if (code == 'l') {
|
|
int x, y;
|
|
int height = 0, width;
|
|
int thickness;
|
|
if (line_thickness < 0)
|
|
thickness = env->size*RES_7227*linewidth/1000;
|
|
else if (line_thickness > 0)
|
|
thickness = line_thickness;
|
|
else
|
|
thickness = 1;
|
|
if (np != 2) {
|
|
error("2 arguments required for line");
|
|
}
|
|
else if (p[0] == 0) {
|
|
// vertical rule
|
|
if (p[1] > 0) {
|
|
x = env->hpos - thickness/2;
|
|
y = env->vpos + p[1] + thickness/2;
|
|
height = p[1] + thickness;
|
|
width = thickness;
|
|
}
|
|
else if (p[1] < 0) {
|
|
x = env->hpos - thickness/2;
|
|
y = env->vpos + thickness/2;
|
|
height = thickness - p[1];
|
|
width = thickness;
|
|
}
|
|
}
|
|
else if (p[1] == 0) {
|
|
if (p[0] > 0) {
|
|
x = env->hpos - thickness/2;
|
|
y = env->vpos + thickness/2;
|
|
height = thickness;
|
|
width = p[0] + thickness;
|
|
}
|
|
else if (p[0] < 0) {
|
|
x = env->hpos - p[0] - thickness/2;
|
|
y = env->vpos + thickness/2;
|
|
height = thickness;
|
|
width = thickness - p[0];
|
|
}
|
|
}
|
|
if (height != 0) {
|
|
moveto(x, y);
|
|
out1(put_rule);
|
|
out4(height);
|
|
out4(width);
|
|
}
|
|
}
|
|
else if (code == 't') {
|
|
if (np == 0) {
|
|
line_thickness = -1;
|
|
}
|
|
else {
|
|
// troff gratuitously adds an extra 0
|
|
if (np != 1 && np != 2)
|
|
error("0 or 1 argument required for thickness");
|
|
else
|
|
line_thickness = p[0];
|
|
}
|
|
}
|
|
else if (code == 'R') {
|
|
if (np != 2)
|
|
error("2 arguments required for rule");
|
|
else if (p[0] != 0 || p[1] != 0) {
|
|
int dh = p[0];
|
|
int dv = p[1];
|
|
int oh = env->hpos;
|
|
int ov = env->vpos;
|
|
if (dv > 0) {
|
|
ov += dv;
|
|
dv = -dv;
|
|
}
|
|
if (dh < 0) {
|
|
oh += dh;
|
|
dh = -dh;
|
|
}
|
|
moveto(oh, ov);
|
|
out1(put_rule);
|
|
out4(-dv);
|
|
out4(dh);
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX Will this overflow?
|
|
|
|
inline int milliinches(int n)
|
|
{
|
|
return (n*1000 + font::res/2)/font::res;
|
|
}
|
|
|
|
void draw_dvi_printer::set_line_thickness(const environment *env)
|
|
{
|
|
int desired_pen_size
|
|
= milliinches(line_thickness < 0
|
|
// Will this overflow?
|
|
? env->size*RES_7227*linewidth/1000
|
|
: line_thickness);
|
|
if (desired_pen_size != output_pen_size) {
|
|
char buf[256];
|
|
sprintf(buf, "pn %d", desired_pen_size);
|
|
do_special(buf);
|
|
output_pen_size = desired_pen_size;
|
|
}
|
|
}
|
|
|
|
void draw_dvi_printer::fill_next()
|
|
{
|
|
char buf[256];
|
|
sprintf(buf, "sh %.3f", double(fill)/FILL_MAX);
|
|
do_special(buf);
|
|
}
|
|
|
|
void draw_dvi_printer::draw(int code, int *p, int np, const environment *env)
|
|
{
|
|
char buf[1024];
|
|
int fill_flag = 0;
|
|
switch (code) {
|
|
case 'C':
|
|
fill_flag = 1;
|
|
// fall through
|
|
case 'c':
|
|
// troff adds an extra argument to C
|
|
if (np != 1 && !(code == 'C' && np == 2)) {
|
|
error("1 argument required for circle");
|
|
break;
|
|
}
|
|
moveto(env->hpos+p[0]/2, env->vpos);
|
|
if (fill_flag)
|
|
fill_next();
|
|
else
|
|
set_line_thickness(env);
|
|
int rad;
|
|
rad = milliinches(p[0]/2);
|
|
sprintf(buf, "%s 0 0 %d %d 0 6.28319",
|
|
(fill_flag ? "ia" : "ar"),
|
|
rad,
|
|
rad);
|
|
do_special(buf);
|
|
break;
|
|
case 'l':
|
|
if (np != 2) {
|
|
error("2 arguments required for line");
|
|
break;
|
|
}
|
|
moveto(env->hpos, env->vpos);
|
|
set_line_thickness(env);
|
|
do_special("pa 0 0");
|
|
sprintf(buf, "pa %d %d", milliinches(p[0]), milliinches(p[1]));
|
|
do_special(buf);
|
|
do_special("fp");
|
|
break;
|
|
case 'E':
|
|
fill_flag = 1;
|
|
// fall through
|
|
case 'e':
|
|
if (np != 2) {
|
|
error("2 arguments required for ellipse");
|
|
break;
|
|
}
|
|
moveto(env->hpos+p[0]/2, env->vpos);
|
|
if (fill_flag)
|
|
fill_next();
|
|
sprintf(buf, "%s 0 0 %d %d 0 6.28319",
|
|
(fill_flag ? "ia" : "ar"),
|
|
milliinches(p[0]/2),
|
|
milliinches(p[1]/2));
|
|
do_special(buf);
|
|
break;
|
|
case 'P':
|
|
fill_flag = 1;
|
|
// fall through
|
|
case 'p':
|
|
{
|
|
if (np & 1) {
|
|
error("even number of arguments required for polygon");
|
|
break;
|
|
}
|
|
if (np == 0) {
|
|
error("no arguments for polygon");
|
|
break;
|
|
}
|
|
moveto(env->hpos, env->vpos);
|
|
if (fill_flag)
|
|
fill_next();
|
|
else
|
|
set_line_thickness(env);
|
|
do_special("pa 0 0");
|
|
int h = 0, v = 0;
|
|
for (int i = 0; i < np; i += 2) {
|
|
h += p[i];
|
|
v += p[i+1];
|
|
sprintf(buf, "pa %d %d", milliinches(h), milliinches(v));
|
|
do_special(buf);
|
|
}
|
|
do_special("pa 0 0");
|
|
do_special(fill_flag ? "ip" : "fp");
|
|
break;
|
|
}
|
|
case '~':
|
|
{
|
|
if (np & 1) {
|
|
error("even number of arguments required for spline");
|
|
break;
|
|
}
|
|
if (np == 0) {
|
|
error("no arguments for spline");
|
|
break;
|
|
}
|
|
moveto(env->hpos, env->vpos);
|
|
set_line_thickness(env);
|
|
do_special("pa 0 0");
|
|
int h = 0, v = 0;
|
|
for (int i = 0; i < np; i += 2) {
|
|
h += p[i];
|
|
v += p[i+1];
|
|
sprintf(buf, "pa %d %d", milliinches(h), milliinches(v));
|
|
do_special(buf);
|
|
}
|
|
do_special("sp");
|
|
break;
|
|
}
|
|
case 'a':
|
|
{
|
|
if (np != 4) {
|
|
error("4 arguments required for arc");
|
|
break;
|
|
}
|
|
set_line_thickness(env);
|
|
double c[2];
|
|
if (adjust_arc_center(p, c)) {
|
|
int rad = milliinches(int(sqrt(c[0]*c[0] + c[1]*c[1]) + .5));
|
|
moveto(env->hpos + int(c[0]), env->vpos + int(c[1]));
|
|
sprintf(buf, "ar 0 0 %d %d %f %f",
|
|
rad,
|
|
rad,
|
|
atan2(p[1] + p[3] - c[1], p[0] + p[2] - c[0]),
|
|
atan2(-c[1], -c[0]));
|
|
do_special(buf);
|
|
}
|
|
else {
|
|
moveto(env->hpos, env->vpos);
|
|
do_special("pa 0 0");
|
|
sprintf(buf,
|
|
"pa %d %d",
|
|
milliinches(p[0] + p[2]),
|
|
milliinches(p[1] + p[3]));
|
|
do_special(buf);
|
|
do_special("fp");
|
|
}
|
|
break;
|
|
}
|
|
case 't':
|
|
{
|
|
if (np == 0) {
|
|
line_thickness = -1;
|
|
}
|
|
else {
|
|
// troff gratuitously adds an extra 0
|
|
if (np != 1 && np != 2) {
|
|
error("0 or 1 argument required for thickness");
|
|
break;
|
|
}
|
|
line_thickness = p[0];
|
|
}
|
|
break;
|
|
}
|
|
case 'f':
|
|
{
|
|
if (np != 1 && np != 2) {
|
|
error("1 argument required for fill");
|
|
break;
|
|
}
|
|
fill = p[0];
|
|
if (fill < 0 || fill > FILL_MAX)
|
|
fill = FILL_MAX;
|
|
break;
|
|
}
|
|
case 'R':
|
|
{
|
|
if (np != 2) {
|
|
error("2 arguments required for rule");
|
|
break;
|
|
}
|
|
int dh = p[0];
|
|
if (dh == 0)
|
|
break;
|
|
int dv = p[1];
|
|
if (dv == 0)
|
|
break;
|
|
int oh = env->hpos;
|
|
int ov = env->vpos;
|
|
if (dv > 0) {
|
|
ov += dv;
|
|
dv = -dv;
|
|
}
|
|
if (dh < 0) {
|
|
oh += dh;
|
|
dh = -dh;
|
|
}
|
|
moveto(oh, ov);
|
|
out1(put_rule);
|
|
out4(-dv);
|
|
out4(dh);
|
|
break;
|
|
}
|
|
default:
|
|
error("unrecognised drawing command `%1'", char(code));
|
|
break;
|
|
}
|
|
}
|
|
|
|
font *dvi_printer::make_font(const char *nm)
|
|
{
|
|
return dvi_font::load_dvi_font(nm);
|
|
}
|
|
|
|
printer *make_printer()
|
|
{
|
|
if (draw_flag)
|
|
return new draw_dvi_printer;
|
|
else
|
|
return new dvi_printer;
|
|
}
|
|
|
|
static void usage();
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
program_name = argv[0];
|
|
static char stderr_buf[BUFSIZ];
|
|
setbuf(stderr, stderr_buf);
|
|
int c;
|
|
while ((c = getopt(argc, argv, "F:vw:d")) != EOF)
|
|
switch(c) {
|
|
case 'v':
|
|
{
|
|
extern const char *Version_string;
|
|
fprintf(stderr, "grodvi version %s\n", Version_string);
|
|
fflush(stderr);
|
|
break;
|
|
}
|
|
case 'w':
|
|
if (sscanf(optarg, "%d", &linewidth) != 1
|
|
|| linewidth < 0 || linewidth > 1000) {
|
|
error("bad line width");
|
|
linewidth = DEFAULT_LINEWIDTH;
|
|
}
|
|
break;
|
|
case 'd':
|
|
draw_flag = 0;
|
|
break;
|
|
case 'F':
|
|
font::command_line_font_dir(optarg);
|
|
break;
|
|
case '?':
|
|
usage();
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
#ifdef SET_BINARY
|
|
SET_BINARY(fileno(stdout));
|
|
#endif
|
|
if (optind >= argc)
|
|
do_file("-");
|
|
else {
|
|
for (int i = optind; i < argc; i++)
|
|
do_file(argv[i]);
|
|
}
|
|
delete pr;
|
|
return 0;
|
|
}
|
|
|
|
static void usage()
|
|
{
|
|
fprintf(stderr, "usage: %s [-dv] [-F dir] [-w n] [files ...]\n",
|
|
program_name);
|
|
exit(1);
|
|
}
|