pdf_bookmark.c

Mon, 14 Dec 2009 16:18:21 +0000

author
Philip Pemberton <philpem@philpem.me.uk>
date
Mon, 14 Dec 2009 16:18:21 +0000
changeset 172
2fae6df568f6
parent 125
e2ef1c2f9eca
permissions
-rw-r--r--

remove erroneous 0.33-philpem1 tag

     1 /*
     2  * tumble: build a PDF file from image files
     3  *
     4  * PDF routines
     5  * $Id: pdf_bookmark.c,v 1.6 2003/03/13 00:57:05 eric Exp $
     6  * Copyright 2003 Eric Smith <eric@brouhaha.com>
     7  *
     8  * This program is free software; you can redistribute it and/or modify
     9  * it under the terms of the GNU General Public License version 2 as
    10  * published by the Free Software Foundation.  Note that permission is
    11  * not granted to redistribute this program under the terms of any
    12  * other version of the General Public License.
    13  *
    14  * This program is distributed in the hope that it will be useful,
    15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    17  * GNU General Public License for more details.
    18  *
    19  * You should have received a copy of the GNU General Public License
    20  * along with this program; if not, write to the Free Software
    21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
    22  */
    25 #include <stdbool.h>
    26 #include <stdint.h>
    27 #include <stdio.h>
    28 #include <stdlib.h>
    29 #include <string.h>
    32 #include "bitblt.h"
    33 #include "pdf.h"
    34 #include "pdf_util.h"
    35 #include "pdf_prim.h"
    36 #include "pdf_private.h"
    39 struct pdf_bookmark
    40 {
    41   struct pdf_obj *dict;    /* indirect reference */
    42   struct pdf_obj *count;
    43   bool open;
    45   struct pdf_bookmark *first;
    46   struct pdf_bookmark *last;
    48   /* the following fields don't appear in the root */
    49   /* title and dest are in the dictionary but don't have
    50      explicit fields in the C structure */
    51   struct pdf_bookmark *parent;
    52   struct pdf_bookmark *prev;
    53   struct pdf_bookmark *next;
    54 };
    57 static void pdf_bookmark_update_count (pdf_bookmark_handle entry)
    58 {
    59   while (entry)
    60     {
    61       if (! entry->count)
    62 	{
    63 	  entry->count = pdf_new_integer (0);
    64 	  pdf_set_dict_entry (entry->dict, "Count", entry->count);
    65 	}
    66       pdf_set_integer (entry->count,
    67 		       pdf_get_integer (entry->count) +
    68 		       ((entry->open) ? 1 : -1));
    69       if (! entry->open)
    70 	break;
    71       entry = entry->parent;
    72     }
    73 }
    76 /* Create a new bookmark, under the specified parent, or at the top
    77    level if parent is NULL. */
    78 pdf_bookmark_handle pdf_new_bookmark (pdf_bookmark_handle parent,
    79 				      char *title,
    80 				      bool open,
    81 				      pdf_page_handle pdf_page)
    82 {
    83   pdf_file_handle pdf_file = pdf_page->pdf_file;
    84   struct pdf_bookmark *root;
    85   struct pdf_bookmark *entry;
    87   struct pdf_obj *dest_array;
    89   root = pdf_file->outline_root;
    90   if (! root)
    91     {
    92       root = pdf_calloc (1, sizeof (struct pdf_bookmark));
    93       root->dict = pdf_new_ind_ref (pdf_file, pdf_new_obj (PT_DICTIONARY));
    95       pdf_file->outline_root = root;
    96       pdf_set_dict_entry (pdf_file->catalog, "Outlines", root->dict);
    97     }
    99   entry = pdf_calloc (1, sizeof (struct pdf_bookmark));
   100   entry->dict = pdf_new_ind_ref (pdf_file, pdf_new_obj (PT_DICTIONARY));
   101   entry->open = open;
   103   pdf_set_dict_entry (entry->dict, "Title", pdf_new_string (title));
   105   dest_array = pdf_new_obj (PT_ARRAY);
   106   pdf_add_array_elem (dest_array, pdf_page->page_dict);
   107   pdf_add_array_elem (dest_array, pdf_new_name ("Fit"));
   108   pdf_set_dict_entry (entry->dict, "Dest", dest_array);
   110   if (parent)
   111     {
   112       entry->parent = parent;
   113       entry->prev = parent->last;
   114     }
   115   else
   116     {
   117       parent = root;
   118       entry->parent = root;
   119       entry->prev = root->last;
   120     }
   122   pdf_set_dict_entry (entry->dict, "Parent", parent->dict);
   124   if (entry->prev)
   125     {
   126       pdf_set_dict_entry (entry->dict, "Prev", entry->prev->dict);
   128       entry->prev->next = entry;
   129       pdf_set_dict_entry (entry->prev->dict, "Next", entry->dict);
   131       parent->last = entry;
   132       pdf_set_dict_entry (parent->dict, "Last", entry->dict);
   133     }
   134   else
   135     {
   136       parent->first = entry;
   137       pdf_set_dict_entry (parent->dict, "First", entry->dict);
   139       parent->last = entry;
   140       pdf_set_dict_entry (parent->dict, "Last", entry->dict);
   141     }
   143   pdf_bookmark_update_count (parent);
   145   return (entry);
   146 }