1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
#include "mupdf/fitz.h"
#include "mupdf/pdf.h"
static fz_outline *
pdf_load_outline_imp(fz_context *ctx, pdf_document *doc, pdf_obj *dict)
{
fz_outline *node, **prev, *first = NULL;
pdf_obj *obj;
pdf_obj *odict = dict;
fz_var(dict);
fz_var(first);
fz_try(ctx)
{
prev = &first;
while (dict && pdf_is_dict(ctx, dict))
{
if (pdf_mark_obj(ctx, dict))
break;
node = fz_new_outline(ctx);
*prev = node;
prev = &node->next;
obj = pdf_dict_get(ctx, dict, PDF_NAME_Title);
if (obj)
node->title = pdf_to_utf8(ctx, obj);
if ((obj = pdf_dict_get(ctx, dict, PDF_NAME_Dest)) != NULL)
node->uri = pdf_parse_link_dest(ctx, doc, obj);
else if ((obj = pdf_dict_get(ctx, dict, PDF_NAME_A)) != NULL)
node->uri = pdf_parse_link_action(ctx, doc, obj, -1);
else
node->uri = NULL;
if (node->uri)
node->page = pdf_resolve_link(ctx, doc, node->uri, &node->x, &node->y);
else
node->page = -1;
obj = pdf_dict_get(ctx, dict, PDF_NAME_First);
if (obj)
{
node->down = pdf_load_outline_imp(ctx, doc, obj);
obj = pdf_dict_get(ctx, dict, PDF_NAME_Count);
if (pdf_to_int(ctx, obj) > 0)
node->is_open = 1;
}
dict = pdf_dict_get(ctx, dict, PDF_NAME_Next);
}
}
fz_always(ctx)
{
for (dict = odict; dict && pdf_obj_marked(ctx, dict); dict = pdf_dict_get(ctx, dict, PDF_NAME_Next))
pdf_unmark_obj(ctx, dict);
}
fz_catch(ctx)
{
fz_drop_outline(ctx, first);
fz_rethrow(ctx);
}
return first;
}
fz_outline *
pdf_load_outline(fz_context *ctx, pdf_document *doc)
{
pdf_obj *root, *obj, *first;
fz_outline *outline = NULL;
pdf_load_page_tree(ctx, doc); /* cache page tree for fast link destination lookups */
fz_try(ctx)
{
root = pdf_dict_get(ctx, pdf_trailer(ctx, doc), PDF_NAME_Root);
obj = pdf_dict_get(ctx, root, PDF_NAME_Outlines);
first = pdf_dict_get(ctx, obj, PDF_NAME_First);
if (first)
outline = pdf_load_outline_imp(ctx, doc, first);
}
fz_always(ctx)
pdf_drop_page_tree(ctx, doc);
fz_catch(ctx)
fz_rethrow(ctx);
return outline;
}
|
