pdf: structured text and hyperlink support

1 files changed, 106 insertions, 0 deletions

diff --git a/src/cairo-tag-stack-private.h b/src/cairo-tag-stack-private.h
new file mode 100644
index 000000000..9528cb4f6
--- /dev/null
+++ b/src/cairo-tag-stack-private.h
@@ -0,0 +1,106 @@
+/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
+/* cairo - a vector graphics library with display and print output
+ *
+ * Copyright © 2016 Adrian Johnson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ * The Original Code is the cairo graphics library.
+ *
+ * The Initial Developer of the Original Code is Adrian Johnson.
+ *
+ * Contributor(s):
+ *	Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#ifndef CAIRO_TAG_STACK_PRIVATE_H
+#define CAIRO_TAG_STACK_PRIVATE_H
+
+#include "cairo-list-inline.h"
+
+/* The type of a single tag */
+typedef enum {
+    TAG_TYPE_INVALID = 0,
+    TAG_TYPE_STRUCTURE = 1,
+    TAG_TYPE_LINK = 2,
+    TAG_TYPE_DEST = 4,
+} cairo_tag_type_t;
+
+/* The type of the structure tree. */
+typedef enum _cairo_tag_stack_structure_type {
+    TAG_TREE_TYPE_TAGGED, /* compliant with Tagged PDF */
+    TAG_TREE_TYPE_STRUCTURE, /* valid structure but not 'Tagged PDF' compliant */
+    TAG_TREE_TYPE_LINK_ONLY, /* contains Link tags only */
+    TAG_TREE_TYPE_NO_TAGS, /* no tags used */
+    TAG_TREE_TYPE_INVALID, /* invalid tag structure */
+} cairo_tag_stack_structure_type_t;
+
+typedef struct _cairo_tag_stack_elem {
+    char *name;
+    char *attributes;
+    void *data;
+    cairo_list_t link;
+
+} cairo_tag_stack_elem_t;
+
+typedef struct _cairo_tag_stack {
+    cairo_list_t list;
+    cairo_tag_stack_structure_type_t type;
+    int size;
+
+} cairo_tag_stack_t;
+
+cairo_private void
+_cairo_tag_stack_init (cairo_tag_stack_t *stack);
+
+cairo_private void
+_cairo_tag_stack_fini (cairo_tag_stack_t *stack);
+
+cairo_private cairo_tag_stack_structure_type_t
+_cairo_tag_stack_get_structure_type (cairo_tag_stack_t *stack);
+
+cairo_private cairo_int_status_t
+_cairo_tag_stack_push (cairo_tag_stack_t *stack,
+		       const char        *name,
+		       const char        *attributes);
+
+cairo_private void
+_cairo_tag_stack_set_top_data (cairo_tag_stack_t *stack,
+			       void              *data);
+
+cairo_private cairo_int_status_t
+_cairo_tag_stack_pop (cairo_tag_stack_t *stack,
+		      const char *name,
+		      cairo_tag_stack_elem_t **elem);
+
+cairo_private cairo_tag_stack_elem_t *
+_cairo_tag_stack_top_elem (cairo_tag_stack_t *stack);
+
+cairo_private void
+_cairo_tag_stack_free_elem (cairo_tag_stack_elem_t *elem);
+
+cairo_private cairo_tag_type_t
+_cairo_tag_get_type (const char *name);
+
+#endif /* CAIRO_TAG_STACK_PRIVATE_H */