static fz_outline *
pdf_load_outline_imp(pdf_document *xref, pdf_obj *dict)
{
fz_context *ctx = xref->ctx;
fz_outline *node, **prev, *first;
pdf_obj *obj;
pdf_obj *odict = dict;
fz_var(dict);
fz_try(ctx)
{
first = NULL;
prev = &first;
while (dict && pdf_is_dict(dict))
{
if (pdf_obj_mark(dict))
break;
node = fz_malloc_struct(ctx, fz_outline);
node->title = NULL;
node->dest.kind = FZ_LINK_NONE;
node->down = NULL;
node->next = NULL;
*prev = node;
prev = &node->next;
obj = pdf_dict_gets(dict, "Title");
if (obj)
node->title = pdf_to_utf8(xref, obj);
/* SumatraPDF: support expansion states */
node->is_open = pdf_to_int(pdf_dict_gets(dict, "Count")) >= 0;
if ((obj = pdf_dict_gets(dict, "Dest")))
node->dest = pdf_parse_link_dest(xref, obj);
else if ((obj = pdf_dict_gets(dict, "A")))
node->dest = pdf_parse_action(xref, obj);
obj = pdf_dict_gets(dict, "First");
if (obj)
node->down = pdf_load_outline_imp(xref, obj);
dict = pdf_dict_gets(dict, "Next");
}
}
fz_always(ctx)
{
for (dict = odict; dict && pdf_obj_marked(dict); dict = pdf_dict_gets(dict, "Next"))
pdf_obj_unmark(dict);
}
fz_catch(ctx)
{
/* SumatraPDF: fix memory leak */
fz_free_outline(ctx, first);
fz_rethrow(ctx);
}
return first;
}
static fz_outline *
pdf_load_outline_imp(pdf_document *xref, fz_obj *dict)
{
fz_context *ctx = xref->ctx;
fz_outline *node, **prev, *first;
fz_obj *obj;
fz_obj *odict = dict;
fz_var(dict);
fz_try(ctx)
{
first = NULL;
prev = &first;
while (dict && fz_is_dict(dict))
{
if (fz_dict_mark(dict))
break;
node = fz_malloc_struct(ctx, fz_outline);
node->title = NULL;
node->dest.kind = FZ_LINK_NONE;
node->down = NULL;
node->next = NULL;
*prev = node;
prev = &node->next;
obj = fz_dict_gets(dict, "Title");
if (obj)
node->title = pdf_to_utf8(ctx, obj);
if ((obj = fz_dict_gets(dict, "Dest")))
node->dest = pdf_parse_link_dest(xref, obj);
else if ((obj = fz_dict_gets(dict, "A")))
node->dest = pdf_parse_action(xref, obj);
obj = fz_dict_gets(dict, "First");
if (obj)
node->down = pdf_load_outline_imp(xref, obj);
dict = fz_dict_gets(dict, "Next");
}
}
fz_catch(ctx)
{
for (dict = odict; dict && fz_dict_marked(dict); dict = fz_dict_gets(dict, "Next"))
fz_dict_unmark(dict);
fz_rethrow(ctx);
}
for (dict = odict; dict && fz_dict_marked(dict); dict = fz_dict_gets(dict, "Next"))
fz_dict_unmark(dict);
return first;
}
static fz_link *
pdf_load_link(pdf_document *xref, pdf_obj *dict, fz_matrix page_ctm)
{
pdf_obj *dest = NULL;
pdf_obj *action;
pdf_obj *obj;
fz_rect bbox;
fz_context *ctx = xref->ctx;
fz_link_dest ld;
dest = NULL;
obj = pdf_dict_gets(dict, "Rect");
if (obj)
bbox = pdf_to_rect(ctx, obj);
else
bbox = fz_empty_rect;
bbox = fz_transform_rect(page_ctm, bbox);
obj = pdf_dict_gets(dict, "Dest");
if (obj)
{
dest = resolve_dest(xref, obj);
ld = pdf_parse_link_dest(xref, dest);
}
else
{
action = pdf_dict_gets(dict, "A");
/* fall back to additional action button's down/up action */
if (!action)
action = pdf_dict_getsa(pdf_dict_gets(dict, "AA"), "U", "D");
ld = pdf_parse_action(xref, action);
}
if (ld.kind == FZ_LINK_NONE)
return NULL;
return fz_new_link(ctx, bbox, ld);
}
