/* * t2p: Create a PDF file from the contents of one or more TIFF * bilevel image files. The images in the resulting PDF file * will be compressed using ITU-T T.6 (G4) fax encoding. * * PDF routines * $Id: pdf.c,v 1.5 2003/03/04 18:09:49 eric Exp $ * Copyright 2001, 2002, 2003 Eric Smith * * 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 #include #include #include #include "bitblt.h" #include "pdf.h" #include "pdf_util.h" #include "pdf_prim.h" #include "pdf_private.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_ind_ref (pdf_file, pdf_new_obj (PT_ARRAY)); 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, int page_mode) { pdf_file_handle pdf_file; char *page_mode_string; switch (page_mode) { case PDF_PAGE_MODE_USE_NONE: page_mode_string = "UseNone"; break; case PDF_PAGE_MODE_USE_OUTLINES: page_mode_string = "UseOutlines"; break; case PDF_PAGE_MODE_USE_THUMBS: page_mode_string = "UseThumbs"; break; default: pdf_fatal ("invalid page mode\n"); } 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, "PageMode", pdf_new_name (page_mode_string)); pdf_file->info = pdf_new_ind_ref (pdf_file, pdf_new_obj (PT_DICTIONARY)); pdf_set_info (pdf_file, "Producer", "t2p, Copyright 2003 Eric Smith "); 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-1.2\r\n"); return (pdf_file); } void pdf_close (pdf_file_handle pdf_file) { /* 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 (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); /* $$$ 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) { } void pdf_bookmark (pdf_page_handle pdf_page, int level, char *name) { }