static fz_link *
pdf_load_link(fz_context *ctx, pdf_document *doc, pdf_obj *dict, int pagenum, const fz_matrix *page_ctm)
{
pdf_obj *action;
pdf_obj *obj;
fz_rect bbox;
char *uri;
fz_link *link = NULL;
obj = pdf_dict_get(ctx, dict, PDF_NAME_Subtype);
if (!pdf_name_eq(ctx, obj, PDF_NAME_Link))
return NULL;
obj = pdf_dict_get(ctx, dict, PDF_NAME_Rect);
if (!obj)
return NULL;
pdf_to_rect(ctx, obj, &bbox);
fz_transform_rect(&bbox, page_ctm);
obj = pdf_dict_get(ctx, dict, PDF_NAME_Dest);
if (obj)
uri = pdf_parse_link_dest(ctx, doc, obj);
else
{
action = pdf_dict_get(ctx, dict, PDF_NAME_A);
/* fall back to additional action button's down/up action */
if (!action)
action = pdf_dict_geta(ctx, pdf_dict_get(ctx, dict, PDF_NAME_AA), PDF_NAME_U, PDF_NAME_D);
uri = pdf_parse_link_action(ctx, doc, action, pagenum);
}
if (!uri)
return NULL;
fz_try(ctx)
link = fz_new_link(ctx, &bbox, doc, uri);
fz_always(ctx)
fz_free(ctx, uri);
fz_catch(ctx)
fz_rethrow(ctx);
return link;
}
static fz_outline *
pdf_load_outline_imp(fz_context *ctx, pdf_document *doc, pdf_obj *dict)
{
fz_outline *node, **prev, *first;
pdf_obj *obj;
pdf_obj *odict = dict;
fz_var(dict);
fz_var(first);
fz_try(ctx)
{
first = NULL;
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);
else
node->uri = NULL;
if (node->uri)
node->page = pdf_resolve_link(ctx, doc, node->uri, NULL, NULL);
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;
}
