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/*
This file is part of anastasis-gtk.
Copyright (C) 2021 Anastasis SARL
Anastasis 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 3, or (at your
option) any later version.
Anastasis 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 Anastasis; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* @file src/anastasis/print.c
* @brief Printing helper.
* @author Christian Grothoff
*/
#include <gnunet/platform.h>
#include <setjmp.h>
#include <hpdf.h>
#include <gnunet/gnunet_util_lib.h>
#include "print.h"
static void
error_handler (HPDF_STATUS error_no,
HPDF_STATUS detail_no,
void *user_data)
{
jmp_buf *env = user_data;
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"error_no=%04X, detail_no=%u\n",
(HPDF_UINT) error_no,
(HPDF_UINT) detail_no);
longjmp (*env,
1);
}
int
AG_print (json_t *user,
const char *fname)
{
const char *page_title = "GNU Anastasis Identity Sheet";
const char *type;
json_t *jvalue;
HPDF_Doc pdf;
HPDF_Font font;
HPDF_Page page;
float tw;
float fsize;
jmp_buf env;
pdf = HPDF_New (&error_handler,
&env);
if (! pdf)
{
printf ("error: cannot create PdfDoc object\n");
return 1;
}
if (setjmp (env))
{
HPDF_Free (pdf);
return 1;
}
/* set compression mode */
HPDF_SetCompressionMode (pdf,
HPDF_COMP_ALL);
/* create default-font */
font = HPDF_GetFont (pdf,
"Helvetica",
NULL);
/* add a new page object. */
page = HPDF_AddPage (pdf);
/* print the lines of the page. */
HPDF_Page_SetLineWidth (page, 1);
HPDF_Page_Rectangle (page,
50, 50,
HPDF_Page_GetWidth (page) - 100,
HPDF_Page_GetHeight (page) - 110);
HPDF_Page_Stroke (page);
/* print the title of the page (with positioning center). */
HPDF_Page_SetFontAndSize (page,
font,
24);
tw = HPDF_Page_TextWidth (page,
page_title);
HPDF_Page_BeginText (page);
HPDF_Page_TextOut (page,
(HPDF_Page_GetWidth (page) - tw) / 2,
HPDF_Page_GetHeight (page) - 50,
page_title);
HPDF_Page_EndText (page);
HPDF_Page_BeginText (page);
HPDF_Page_MoveTextPos (page, 60, HPDF_Page_GetHeight (page) - 60);
/*
* font size
*/
fsize = 18;
json_object_foreach (user, type, jvalue)
{
char *val;
int len;
/* print the description. */
HPDF_Page_MoveTextPos (page, 0, -12);
HPDF_Page_SetFontAndSize (page, font, 10);
HPDF_Page_ShowText (page, type);
/* set the position of the text. */
HPDF_Page_MoveTextPos (page, 10, -5 - fsize);
val = GNUNET_strdup (json_string_value (jvalue));
do {
/* set style and size of font. */
HPDF_Page_SetFontAndSize (page, font, fsize);
/* measure the number of characters which included in the page. */
len = HPDF_Page_MeasureText (page,
val,
HPDF_Page_GetWidth (page) - 130,
HPDF_FALSE,
NULL);
if ( (len < (ssize_t) strlen (val)) &&
(fsize > 10) )
fsize--;
else
break;
} while (1);
/* truncate the text. */
val[len] = 0x00;
HPDF_Page_ShowText (page, val);
GNUNET_free (val);
HPDF_Page_MoveTextPos (page, -10, -25 - fsize);
}
HPDF_Page_EndText (page);
/* save the document to a file */
HPDF_SaveToFile (pdf, fname);
/* clean up */
HPDF_Free (pdf);
return 0;
}
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