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eda-tools/genkicat/pdf.c
2013-10-25 20:54:32 -03:00

378 lines
8.5 KiB
C

/*
* pdf.c - Generate PDF
*
* Copyright 2012, 2013 by Werner Almesberger
*
* 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.
*/
#define _GNU_SOURCE /* for strcasecmp */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "util.h"
#include "run.h"
#include "genkicat.h"
#include "tree.h"
#include "libs.h"
#include "pdf.h"
static struct format {
const char *file_setup;
const char *overlay_setup;
int left;
struct text {
const char *font;
int size;
int y;
} name, path, lib, comment, index;
int comment_line_skip;
int index_line_skip;
int index_column_skip;
int index_lines;
int index_columns;
} landscape = {
.file_setup = "%%Orientation: Landscape",
.overlay_setup = "90 rotate",
.left = 20,
.name = { "Helvetica-Bold", 24, 57 },
.path = { "Helvetica-Bold", 18, 30 },
.lib = { "Courier", 12, 75 },
.comment = { "Helvetica", 12, 600 },
.index = { "Helvetica", 10, 32 },
.comment_line_skip = 14,
.index_line_skip = 12,
.index_column_skip = 195, /* make a little wider than in portrait */
.index_lines = 45,
.index_columns = 4,
}, portrait = {
.file_setup = "%%Orientation: Portrait",
.overlay_setup = "0 790 translate",
.left = 20,
.name = { "Helvetica-Bold", 24, 57 },
.path = { "Helvetica-Bold", 18, 30 },
.lib = { "Courier", 12, 75 },
.comment = { "Helvetica", 12, 740 },
.index = { "Helvetica", 10, 0 },
.comment_line_skip = 14,
.index_line_skip = 12,
.index_column_skip = 185,
.index_lines = 63,
.index_columns = 3,
};
static const struct format *format;
static int total, done = 0;
/* ----- Utility functions ------------------------------------------------- */
static void ps_string(FILE *file, const char *s)
{
fputc('(', file);
while (*s) {
if (*s == '(' || *s == ')' || *s == '\\')
fputc('\\', file);
fputc(*s, file);
s++;
}
fputc(')', file);
}
/* ----- Alphabetic index -------------------------------------------------- */
struct index {
const char *s;
const struct node *node;
};
static void collect_names(const struct node *node, struct index **idx, int *n)
{
const struct name *name;
while (node) {
if (node->child)
collect_names(node->child, idx, n);
else {
for (name = node->e->names; name; name = name->next) {
(*n)++;
*idx = realloc(*idx, *n*sizeof(struct entry));
if (!*idx)
abort();
(*idx)[*n-1].s = name->s;
(*idx)[*n-1].node = node;
}
}
node = node->next;
}
}
static int comp(const void *a, const void *b)
{
const struct index *ai = a;
const struct index *bi = b;
return strcasecmp(ai->s, bi->s);
}
static void make_index(FILE *file, const struct node *node)
{
struct index *idx = NULL;
const struct index *p;
int n = 0;
int line = 0, col = 0;
collect_names(node, &idx, &n);
qsort(idx, n, sizeof(struct index), comp);
fprintf(file, "[ /Title (Index) /Count 0 /OUT pdfmark\n");
fprintf(file, "/%s findfont %d scalefont setfont\n",
format->index.font, format->index.size);
fprintf(file, "gsave %s 0 setgray\n", format->overlay_setup);
for (p = idx; p != idx+n; p++) {
if (line == format->index_lines) {
line = 0;
col++;
}
if (col == format->index_columns) {
fprintf(file, "grestore showpage\n");
fprintf(file, "gsave %s 0 setgray\n",
format->overlay_setup);
col = 0;
}
fprintf(file, "newpath %d -%d moveto currentpoint\n",
format->left+col*format->index_column_skip,
format->index.y+line*format->index_line_skip);
fprintf(file, "[ /Rect [ ");
ps_string(file, p->s);
fprintf(file, " false charpath flattenpath pathbbox ]\n");
fprintf(file, " /Subtype /Link\n");
fprintf(file, " /Border [ 0 0 0 ]\n");
fprintf(file, " /Action << /Subtype /GoTo /Dest /%p%p >>\n",
p->node, p->s);
fprintf(file, " /ANN pdfmark\n");
fprintf(file, "moveto ");
ps_string(file, p->s);
fprintf(file, " show\n");
line++;
}
fprintf(file, "grestore showpage\n");
free(idx);
}
/* ----- Overlay and table of contents ------------------------------------- */
static int children(const struct node *node)
{
int n = 0;
while (node) {
n++;
node = node->next;
}
return n;
}
static void print_path(FILE *file, const struct node *node)
{
if (node->parent) {
print_path(file, node->parent);
fprintf(file, "( > ) show\n");
}
ps_string(file, node->name);
fprintf(file, " 0.5 setgray show 0 setgray\n");
}
static void make_title(FILE *file, const struct node *node, int unit)
{
const struct name *name;
fprintf(file, "gsave %s 0 setgray\n", format->overlay_setup);
fprintf(file, "/%s findfont %d scalefont setfont\n",
format->name.font, format->name.size);
fprintf(file, "%d %d moveto\n", format->left, -format->name.y);
for (name = node->e->names; name; name = name->next) {
if (name != node->e->names)
fprintf(file, "(, ) show 0.5 setgray\n");
ps_string(file, name->s);
fprintf(file, " show\n");
if (!unit)
fprintf(file, "[ /Dest /%p%p /DEST pdfmark\n",
node, name->s);
}
fprintf(file, "0 setgray\n");
if (node->e->units > 1)
fprintf(file, " ( \\(%c\\)) show\n", 'A'+unit);
fprintf(file, "/%s findfont %d scalefont setfont\n",
format->path.font, format->path.size);
fprintf(file, "%d %d moveto\n", format->left, -format->path.y);
print_path(file, node);
fprintf(file, "/%s findfont %d scalefont setfont\n",
format->lib.font, format->lib.size);
fprintf(file, "%d %d moveto\n", format->left, -format->lib.y);
ps_string(file, node->e->file->path);
fprintf(file, " show\n");
fprintf(file, "grestore\n");
}
static void print_comment(FILE *file, const struct line *comment)
{
const struct line *line;
int lines = 0;
int n;
fprintf(file, "gsave %s 0 setgray\n", format->overlay_setup);
fprintf(file, "/%s findfont %d scalefont setfont\n",
format->comment.font, format->comment.size);
for (line = comment; line; line = line->next)
lines++;
n = 0;
for (line = comment; line; line = line->next) {
n++;
fprintf(file, "newpath %d -%d moveto\n", format->left,
format->comment.y+(n-lines)*format->comment_line_skip);
if (line->url) {
fprintf(file, "currentpoint\n");
fprintf(file, "[ /Rect [ ");
ps_string(file, line->s);
fprintf(file,
" false charpath flattenpath pathbbox ]\n");
fprintf(file, " /Subtype /Link\n");
fprintf(file, " /Border [ 0 0 0 ]\n");
fprintf(file, " /Action << /Subtype /URI /URI ");
ps_string(file, line->s);
fprintf(file, " >>\n");
fprintf(file, " /ANN pdfmark\n");
fprintf(file, " moveto\n");
}
ps_string(file, line->s);
fprintf(file, " show\n");
}
fprintf(file, "grestore\n");
}
/* ----- Component conversion ---------------------------------------------- */
static void convert_entry(const struct node *node, FILE *out)
{
const struct lib *lib = node->e->file->lib;
int i;
for (i = 0; i != node->e->units; i++) {
if (!quiet) {
fprintf(stderr, "\r%u/%u", ++done, total);
fflush(stderr);
}
make_title(out, node, i);
if (!i && node->comment)
print_comment(out, node->comment);
fprintf(out, "gsave\n");
node->e->file->lib->ps_entry(out, lib, node->e, i,
format == &landscape);
fprintf(out, "\ngrestore\n");
}
}
static void convert_tree(const struct node *node, FILE *out)
{
while (node) {
fprintf(out, "[ /Title (%s) /Count %d /OUT pdfmark\n",
node->name, -children(node->child));
if (node->child)
convert_tree(node->child, out);
else
convert_entry(node, out);
node = node->next;
}
}
/* ----- Setup and PDF generation ------------------------------------------ */
static int count_tree(const struct node *node)
{
int sum = 0;
while (node) {
if (node->child)
sum += count_tree(node->child);
else
sum += node->e->units;
node = node->next;
}
return sum;
}
void make_pdf(int pdf, int use_portrait, const char *title_page)
{
FILE *out;
int res;
if (use_portrait)
format = &portrait;
else
format = &landscape;
if (pdf)
out = popen(
"gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sPAPERSIZE=a4 "
"-sOutputFile=- -f -", "w");
else
out = popen("cat", "w");
if (!out) {
perror("gs");
exit(1);
}
fprintf(out, "%%!PS\n%s\n", format->file_setup);
if (title_page) {
fprintf(out, "gsave\n");
cat(out, title_page);
fprintf(out, "grestore\n");
}
make_index(out, tree);
total = count_tree(tree);
convert_tree(tree, out);
if (!quiet)
fprintf(stderr, "\rFinishing\n");
res = pclose(out);
if (res < 0) {
perror("pclose");
exit(1);
}
if (res) {
fprintf(stderr, "exit status %d\n", res);
exit(1);
}
}