static void retainpage(fz_context *ctx, pdf_document *doc, pdf_obj *parent, pdf_obj *kids, int page)
{
pdf_obj *pageref = pdf_lookup_page_obj(ctx, doc, page-1);
pdf_flatten_inheritable_page_items(ctx, pageref);
pdf_dict_put(ctx, pageref, PDF_NAME_Parent, parent);
/* Store page object in new kids array */
pdf_array_push(ctx, kids, pageref);
}
static void page_merge(int page_from, int page_to, pdf_graft_map *graft_map)
{
pdf_obj *page_ref;
pdf_obj *page_dict;
pdf_obj *obj;
pdf_obj *ref = NULL;
int i;
/* Copy as few key/value pairs as we can. Do not include items that reference other pages. */
static pdf_obj * const copy_list[] = { PDF_NAME(Contents), PDF_NAME(Resources),
PDF_NAME(MediaBox), PDF_NAME(CropBox), PDF_NAME(BleedBox), PDF_NAME(TrimBox), PDF_NAME(ArtBox),
PDF_NAME(Rotate), PDF_NAME(UserUnit) };
fz_var(ref);
fz_try(ctx)
{
page_ref = pdf_lookup_page_obj(ctx, doc_src, page_from - 1);
pdf_flatten_inheritable_page_items(ctx, page_ref);
/* Make a new page object dictionary to hold the items we copy from the source page. */
page_dict = pdf_new_dict(ctx, doc_des, 4);
pdf_dict_put(ctx, page_dict, PDF_NAME(Type), PDF_NAME(Page));
for (i = 0; i < nelem(copy_list); i++)
{
obj = pdf_dict_get(ctx, page_ref, copy_list[i]);
if (obj != NULL)
pdf_dict_put_drop(ctx, page_dict, copy_list[i], pdf_graft_mapped_object(ctx, graft_map, obj));
}
/* Add the page object to the destination document. */
ref = pdf_add_object_drop(ctx, doc_des, page_dict);
/* Insert it into the page tree. */
pdf_insert_page(ctx, doc_des, page_to - 1, ref);
}
fz_always(ctx)
{
pdf_drop_obj(ctx, ref);
}
fz_catch(ctx)
{
fz_rethrow(ctx);
}
}
