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Code

eeshow/gfx/cro.c: support PDF TOC addition; option -T to suppress it

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This commit is contained in:
Werner Almesberger 2016-08-21 11:37:47 -03:00
parent 71d03c7281
commit 5fd877a6f8
2 changed files with 44 additions and 4 deletions
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43
eeshow/gfx/cro.c
View File

@ -28,6 +28,7 @@
#include "gfx/text.h"
#include "gfx/gfx.h"
#include "gfx/record.h"
#include "gfx/pdftoc.h"
#include "main.h"
#include "gfx/cro.h"
@ -55,6 +56,9 @@ struct cro_ctx {
const char *output_name;
bool add_toc;
struct pdftoc *toc;
int color_override; /* FIG color, COLOR_NONE if no override */
};
@ -273,6 +277,8 @@ static struct cro_ctx *new_cc(void)
cc->output_name = NULL;
cc->add_toc = 1;
cc->toc = NULL;
/*
* record_init does not perform allocations or such, so it's safe to
* call it here even if we don't use this facility.
@ -288,7 +294,7 @@ static struct cro_ctx *init_common(int argc, char *const *argv)
struct cro_ctx *cc = new_cc();
char c;
while ((c = getopt(argc, argv, "o:s:")) != EOF)
while ((c = getopt(argc, argv, "o:s:T")) != EOF)
switch (c) {
case 'o':
cc->output_name = optarg;
@ -296,6 +302,9 @@ static struct cro_ctx *init_common(int argc, char *const *argv)
case 's':
cc->scale = atof(optarg) * DEFAULT_SCALE;
break;
case 'T':
cc->add_toc = 0;
break;
default:
usage(*argv);
}
@ -353,6 +362,16 @@ static cairo_status_t stream_to_stdout(void *closure,
/* ----- PDF (auto-sizing, using redraw) ----------------------------------- */
static cairo_status_t stream_to_pdftoc(void *closure,
const unsigned char *data, unsigned length)
{
struct cro_ctx *cc = closure;
return pdftoc_write(cc->toc, data, length) ?
CAIRO_STATUS_SUCCESS : CAIRO_STATUS_WRITE_ERROR;
}
static void *cr_pdf_init(int argc, char *const *argv)
{
struct cro_ctx *cc;
@ -364,10 +383,22 @@ static void *cr_pdf_init(int argc, char *const *argv)
cc->s = cairo_pdf_surface_create(NULL, 16, 16);
cc->cr = cairo_create(cc->s);
if (cc->add_toc)
cc->toc = pdftoc_begin(cc->output_name);
return cc;
}
static void cr_pdf_sheet_name(void *ctx, const char *name)
{
struct cro_ctx *cc = ctx;
if (cc->toc)
pdftoc_title(cc->toc, name ? name : "???");
}
static void cr_pdf_new_sheet(void *ctx)
{
struct cro_ctx *cc = ctx;
@ -389,7 +420,10 @@ static void cr_pdf_end(void *ctx)
end_common(cc, &w, &h, NULL, NULL);
if (cc->output_name)
if (cc->toc)
cc->s = cairo_pdf_surface_create_for_stream(stream_to_pdftoc,
cc, w, h);
else if (cc->output_name)
cc->s = cairo_pdf_surface_create(cc->output_name, w, h);
else
cc->s = cairo_pdf_surface_create_for_stream(stream_to_stdout,
@ -419,6 +453,10 @@ static void cr_pdf_end(void *ctx)
cairo_surface_destroy(cc->s);
cairo_destroy(cc->cr);
if (cc->toc)
pdftoc_end(cc->toc);
}
@ -597,6 +635,7 @@ const struct gfx_ops cro_pdf_ops = {
.text = record_text,
.text_width = cr_text_width,
.init = cr_pdf_init,
.sheet_name = cr_pdf_sheet_name,
.new_sheet = cr_pdf_new_sheet,
.end = cr_pdf_end,
};

5
eeshow/main.c
View File

@ -78,9 +78,10 @@ void usage(const char *name)
" -s scale scale by indicated factor (default: 1.0)\n"
"\n"
"Cairo PDF driver spec:\n"
" pdf [-o output.pdf] [-s scale]\n"
" pdf [-o output.pdf] [-s scale] [-T]\n"
"\n"
" see PNG\n"
" see PNG for -o and -s\n"
" -T do not add table of contents\n"
"\n"
"Diff driver spec:\n"
" diff [-o output.pdf] [-s scale] [file.lib ...] file.sch\n"