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754f431642
- If a link has both 'dest' and 'uri', the 'dest' will be used if it exists, otherwise it will fallback to using the 'uri'. - Ensure that a missing 'dest' does not result in an error. Instead a warning is printed if CAIRO_DEBUG_TAG is set, and a link to the current location is embedded in the PDF. ie the link does nothing. Cairo needs to embed a link even if no destination is available because when links are embedded at the end of the document, the content stream already contains link tags. - Remove cairo_pdf_interchange_write_forward_links. This code was originally used prior to !463 when cairo wrote the links at the end of each page. Now the links are written at the end of the document so there are no longer any forward links with an unknown destination, unless the destination does not exist. - When 'internal' is not used, use the 'dest' name to reference the link. Ensure non ASCII names are correctly encoded.
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
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/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2016 Adrian Johnson
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*
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* This library is free software; you can redistribute it and/or
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* modify it either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is Adrian Johnson.
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*
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* Contributor(s):
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* Adrian Johnson <ajohnson@redneon.com>
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*/
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#ifndef CAIRO_TAG_STACK_PRIVATE_H
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#define CAIRO_TAG_STACK_PRIVATE_H
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#include "cairo-error-private.h"
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#include "cairo-list-inline.h"
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/* The type of a single tag */
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typedef enum {
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TAG_TYPE_INVALID = 0,
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TAG_TYPE_STRUCTURE = 1,
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TAG_TYPE_LINK = 2,
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TAG_TYPE_DEST = 4,
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TAG_TYPE_CONTENT = 8,
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TAG_TYPE_CONTENT_REF = 16,
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TAG_TYPE_ARTIFACT = 16,
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} cairo_tag_type_t;
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/* The type of the structure tree. */
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typedef enum _cairo_tag_stack_structure_type {
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TAG_TREE_TYPE_TAGGED, /* compliant with Tagged PDF */
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TAG_TREE_TYPE_STRUCTURE, /* valid structure but not 'Tagged PDF' compliant */
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TAG_TREE_TYPE_LINK_ONLY, /* contains Link tags only */
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TAG_TREE_TYPE_NO_TAGS, /* no tags used */
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TAG_TREE_TYPE_INVALID, /* invalid tag structure */
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} cairo_tag_stack_structure_type_t;
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typedef struct _cairo_tag_stack_elem {
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char *name;
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char *attributes;
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void *data;
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cairo_list_t link;
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} cairo_tag_stack_elem_t;
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typedef struct _cairo_tag_stack {
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cairo_list_t list;
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cairo_tag_stack_structure_type_t type;
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int size;
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} cairo_tag_stack_t;
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cairo_private void
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_cairo_tag_stack_init (cairo_tag_stack_t *stack);
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cairo_private void
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_cairo_tag_stack_fini (cairo_tag_stack_t *stack);
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cairo_private cairo_tag_stack_structure_type_t
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_cairo_tag_stack_get_structure_type (cairo_tag_stack_t *stack);
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cairo_private cairo_int_status_t
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_cairo_tag_stack_push (cairo_tag_stack_t *stack,
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const char *name,
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const char *attributes);
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cairo_private void
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_cairo_tag_stack_set_top_data (cairo_tag_stack_t *stack,
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void *data);
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cairo_private cairo_int_status_t
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_cairo_tag_stack_pop (cairo_tag_stack_t *stack,
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const char *name,
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cairo_tag_stack_elem_t **elem);
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cairo_private cairo_tag_stack_elem_t *
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_cairo_tag_stack_top_elem (cairo_tag_stack_t *stack);
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cairo_private void
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_cairo_tag_stack_foreach (cairo_tag_stack_t *stack,
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void (*func)(cairo_tag_stack_elem_t *elem,
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void *closure),
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void *closure);
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cairo_private void
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_cairo_tag_stack_free_elem (cairo_tag_stack_elem_t *elem);
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cairo_private cairo_tag_type_t
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_cairo_tag_get_type (const char *name);
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cairo_private cairo_status_t
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_cairo_tag_error (const char *fmt, ...) CAIRO_PRINTF_FORMAT (1, 2);
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cairo_private void
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_cairo_tag_warning (const char *fmt, ...) CAIRO_PRINTF_FORMAT (1, 2);
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#endif /* CAIRO_TAG_STACK_PRIVATE_H */
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