test/pdf2png.c

   1 /*
   2  * Copyright © 2005 Red Hat, Inc.
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software
   5  * and its documentation for any purpose is hereby granted without
   6  * fee, provided that the above copyright notice appear in all copies
   7  * and that both that copyright notice and this permission notice
   8  * appear in supporting documentation, and that the name of
   9  * Red Hat, Inc. not be used in advertising or publicity pertaining to
  10  * distribution of the software without specific, written prior
  11  * permission. Red Hat, Inc. makes no representations about the
  12  * suitability of this software for any purpose.  It is provided "as
  13  * is" without express or implied warranty.
  14  *
  15  * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  16  * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  17  * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
  18  * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  19  * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  20  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
  21  * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  *
  23  * Author: Kristian Høgsberg <krh@redhat.com>
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <poppler.h>
  29
  30 #define FAIL(msg)                                                       \
  31     do { fprintf (stderr, "FAIL: %s\n", msg); exit (-1); } while (0)
  32
  33 #define PIXELS_PER_POINT 1
  34
  35 int main (int argc, char *argv[])
  36 {
  37     PopplerDocument *document;
  38     PopplerPage *page;
  39     GdkPixbuf *pixbuf;
  40     double width, height;
  41     GError *error;
  42     const char *filename = argv[1];
  43     const char *output_filename = argv[2];
  44     const char *page_label = argv[3];
  45     gchar *absolute, *uri;
  46
  47     if (argc != 4)
  48         FAIL ("usage: pdf2png input_file.pdf output_file.png page");
  49
  50     g_type_init ();
  51
  52     error = NULL;
  53
  54     if (g_path_is_absolute(filename)) {
  55         absolute = g_strdup (filename);
  56     } else {
  57         gchar *dir = g_get_current_dir ();
  58         absolute = g_build_filename (dir, filename, (gchar *) 0);
  59         free (dir);
  60     }
  61
  62     uri = g_filename_to_uri (absolute, NULL, &error);
  63     free (absolute);
  64     if (uri == NULL)
  65         FAIL (error->message);
  66
  67     document = poppler_document_new_from_file (uri, NULL, &error);
  68     if (document == NULL)
  69         FAIL (error->message);
  70
  71     page = poppler_document_get_page_by_label (document, page_label);
  72     if (page == NULL)
  73         FAIL ("page not found");
  74
  75     poppler_page_get_size (page, &width, &height);
  76
  77     pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
  78                              width * PIXELS_PER_POINT,
  79                              height * PIXELS_PER_POINT);
  80     gdk_pixbuf_fill (pixbuf, 0xffffffff);
  81     poppler_page_render_to_pixbuf (page, 0, 0, width , height,
  82                                    PIXELS_PER_POINT, 0, pixbuf);
  83
  84     gdk_pixbuf_save (pixbuf, output_filename, "png", &error, NULL);
  85     if (error != NULL)
  86         FAIL (error->message);
  87
  88     return 0;
  89 }