tumble: pdf.c@76c197fe2eeb (annotated)

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pdf.c@76c197fe2eeb (annotated)

pdf.c

Fri, 14 Mar 2003 08:57:40 +0000

author: eric
date: Fri, 14 Mar 2003 08:57:40 +0000
changeset 133: 76c197fe2eeb
parent 131: 4b8c80d77f76
permissions: -rw-r--r--

specify page mode when file is closed rather than when it is initially created. if USE_OUTLINES but no bookmarks, use USE_NONE instead.

 /*
  * tumble: build a PDF file from image files
  *
  * PDF routines
  * $Id: pdf.c,v 1.13 2003/03/14 00:57:40 eric Exp $
  * Copyright 2001, 2002, 2003 Eric Smith <eric@brouhaha.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.  Note that permission is
  * not granted to redistribute this program under the terms of any
  * other version of the General Public License.
  *
  * This program 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 this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
  */
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "bitblt.h"
 #include "pdf.h"
 #include "pdf_util.h"
 #include "pdf_prim.h"
 #include "pdf_private.h"
 #include "pdf_name_tree.h"
 static void pdf_set_info (pdf_file_handle pdf_file, char *key, char *val)
 {
   if (! pdf_file->info)
     pdf_file->info = pdf_new_ind_ref (pdf_file, pdf_new_obj (PT_DICTIONARY));
   pdf_set_dict_entry (pdf_file->info, key, pdf_new_string (val));
 }
 void pdf_init (void)
 {
 }
 struct pdf_pages *pdf_new_pages (pdf_file_handle pdf_file)
 {
   struct pdf_pages *pages = pdf_calloc (1, sizeof (struct pdf_pages));
   pages->kids = pdf_new_obj (PT_ARRAY);
   /* The PDF 1.0 spec doesn't say that kids can't be an indirect object,
      but Acrobat 4.0 fails to optimize files if it is. */
   pages->count = pdf_new_integer (0);
   pages->pages_dict = pdf_new_ind_ref (pdf_file, pdf_new_obj (PT_DICTIONARY));
   pdf_set_dict_entry (pages->pages_dict, "Type", pdf_new_name ("Pages"));
   pdf_set_dict_entry (pages->pages_dict, "Kids", pages->kids);
   pdf_set_dict_entry (pages->pages_dict, "Count", pages->count);
   return (pages);
 }
 pdf_file_handle pdf_create (char *filename)
 {
   pdf_file_handle pdf_file;
   pdf_file = pdf_calloc (1, sizeof (struct pdf_file));
   pdf_file->f = fopen (filename, "wb");
   if (! pdf_file->f)
     {
       pdf_fatal ("error opening output file\n");
     }
   pdf_file->root = pdf_new_pages (pdf_file);
   pdf_file->catalog = pdf_new_ind_ref (pdf_file, pdf_new_obj (PT_DICTIONARY));
   pdf_set_dict_entry (pdf_file->catalog, "Type", pdf_new_name ("Catalog"));
   pdf_set_dict_entry (pdf_file->catalog, "Pages", pdf_file->root->pages_dict);
   /* Outlines dictionary will be created later if needed */
   pdf_set_dict_entry (pdf_file->catalog, "PageLayout", pdf_new_name ("SinglePage"));
   pdf_file->info    = pdf_new_ind_ref (pdf_file, pdf_new_obj (PT_DICTIONARY));
   pdf_set_info (pdf_file, "Producer", "tumble by Eric Smith -- http://tumble.brouhaha.com/");
   pdf_file->trailer_dict = pdf_new_obj (PT_DICTIONARY);
   /* Size key will be added later */
   pdf_set_dict_entry (pdf_file->trailer_dict, "Root", pdf_file->catalog);
   pdf_set_dict_entry (pdf_file->trailer_dict, "Info", pdf_file->info);
   /* write file header */
   fprintf (pdf_file->f, "%%PDF-1.3\r\n");
   /* write comment containing 8-bit chars as a hint that the file is binary */
   /* PDF 1.4 spec, section 3.4.1 */
   fprintf (pdf_file->f, "%%\342\343\317\323\r\n");
   return (pdf_file);
 }
 void pdf_close (pdf_file_handle pdf_file, int page_mode)
 {
   char *page_mode_string;
   page_mode_string = "UseNone";
   switch (page_mode)
     {
     case PDF_PAGE_MODE_USE_NONE:
       break;
     case PDF_PAGE_MODE_USE_OUTLINES:
       if (pdf_file->outline_root)
 	page_mode_string = "UseOutlines";
       break;
     case PDF_PAGE_MODE_USE_THUMBS:
       page_mode_string = "UseThumbs";
       break;
     default:
       pdf_fatal ("invalid page mode\n");
     }
   pdf_set_dict_entry (pdf_file->catalog,
 		      "PageMode",
 		      pdf_new_name (page_mode_string));
   /* finalize trees, object numbers aren't allocated until this step */
   pdf_finalize_name_trees (pdf_file);
   /* add the page label number tree, if it exists, to the catalog */
   if (pdf_file->page_label_tree)
     pdf_set_dict_entry (pdf_file->catalog,
 			"PageLabels",
 			pdf_file->page_label_tree->root->dict);
   /* write body */
   pdf_write_all_ind_obj (pdf_file);
   /* write cross reference table and get maximum object number */
   pdf_set_dict_entry (pdf_file->trailer_dict, "Size", pdf_new_integer (pdf_write_xref (pdf_file)));
   /* write trailer */
   fprintf (pdf_file->f, "trailer\r\n");
   pdf_write_obj (pdf_file, pdf_file->trailer_dict);
   fprintf (pdf_file->f, "startxref\r\n");
   fprintf (pdf_file->f, "%ld\r\n", pdf_file->xref_offset);
   fprintf (pdf_file->f, "%%%%EOF\r\n");
   fclose (pdf_file->f);
   /* should free stuff here */
 }
 void pdf_set_author   (pdf_file_handle pdf_file, char *author)
 {
   pdf_set_info (pdf_file, "Author", author);
 }
 void pdf_set_creator  (pdf_file_handle pdf_file, char *creator)
 {
   pdf_set_info (pdf_file, "Creator", creator);
 }
 void pdf_set_producer  (pdf_file_handle pdf_file, char *producer)
 {
   pdf_set_info (pdf_file, "Producer", producer);
 }
 void pdf_set_title    (pdf_file_handle pdf_file, char *title)
 {
   pdf_set_info (pdf_file, "Title", title);
 }
 void pdf_set_subject  (pdf_file_handle pdf_file, char *subject)
 {
   pdf_set_info (pdf_file, "Subject", subject);
 }
 void pdf_set_keywords (pdf_file_handle pdf_file, char *keywords)
 {
   pdf_set_info (pdf_file, "Keywords", keywords);
 }
 pdf_page_handle pdf_new_page (pdf_file_handle pdf_file,
 			      double width,
 			      double height)
 {
   pdf_page_handle page = pdf_calloc (1, sizeof (struct pdf_page));
   page->pdf_file = pdf_file;
   page->media_box = pdf_new_obj (PT_ARRAY);
   pdf_add_array_elem (page->media_box, pdf_new_real (0));
   pdf_add_array_elem (page->media_box, pdf_new_real (0));
   pdf_add_array_elem (page->media_box, pdf_new_real (width));
   pdf_add_array_elem (page->media_box, pdf_new_real (height));
   page->procset = pdf_new_obj (PT_ARRAY);
   pdf_add_array_elem_unique (page->procset, pdf_new_name ("PDF"));
   page->resources = pdf_new_obj (PT_DICTIONARY);
   pdf_set_dict_entry (page->resources, "ProcSet", page->procset);
   page->page_dict = pdf_new_ind_ref (pdf_file, pdf_new_obj (PT_DICTIONARY));
   pdf_set_dict_entry (page->page_dict, "Type", pdf_new_name ("Page"));
   pdf_set_dict_entry (page->page_dict, "MediaBox", page->media_box);
   pdf_set_dict_entry (page->page_dict, "Resources", page->resources);
   if (pdf_get_integer (pdf_file->root->count) == 0)
     {
       struct pdf_obj *dest_array = pdf_new_obj (PT_ARRAY);
       pdf_add_array_elem (dest_array, page->page_dict);
       pdf_add_array_elem (dest_array, pdf_new_name ("Fit"));
       pdf_set_dict_entry (pdf_file->catalog, "OpenAction", dest_array);
     }
   /* $$$ currently only support a single-level pages tree */
   pdf_set_dict_entry (page->page_dict, "Parent", pdf_file->root->pages_dict);
   pdf_add_array_elem (pdf_file->root->kids, page->page_dict);
   pdf_set_integer (pdf_file->root->count,
 		   pdf_get_integer (pdf_file->root->count) + 1);
   page->last_XObject_name = '@';  /* first name will be "ImA" */
   return (page);
 }
 void pdf_close_page (pdf_page_handle pdf_page)
 {
 }
 void pdf_set_page_number (pdf_page_handle pdf_page, char *page_number)
 {
 }

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pdf.c@76c197fe2eeb (annotated)

pdf.c