void
pdf_free_annot(fz_context *ctx, pdf_annot *annot)
{
if (annot->next)
pdf_free_annot(ctx, annot->next);
if (annot->ap)
pdf_drop_xobject(ctx, annot->ap);
if (annot->obj)
fz_drop_obj(ctx, annot->obj);
fz_free(ctx, annot);
}
void
pdf_free_page(pdf_document *doc, pdf_page *page)
{
if (page == NULL)
return;
pdf_drop_obj(page->resources);
pdf_drop_obj(page->contents);
if (page->links)
fz_drop_link(doc->ctx, page->links);
if (page->annots)
pdf_free_annot(doc->ctx, page->annots);
if (page->deleted_annots)
pdf_free_annot(doc->ctx, page->deleted_annots);
if (page->tmp_annots)
pdf_free_annot(doc->ctx, page->tmp_annots);
/* doc->focus, when not NULL, refers to one of
* the annotations and must be NULLed when the
* annotations are destroyed. doc->focus_obj
* keeps track of the actual annotation object. */
doc->focus = NULL;
pdf_drop_obj(page->me);
fz_free(doc->ctx, page);
}
pdf_annot *
pdf_create_annot(pdf_document *doc, pdf_page *page, fz_annot_type type)
{
fz_context *ctx = doc->ctx;
pdf_annot *annot = NULL;
pdf_obj *annot_obj = pdf_new_dict(doc, 0);
pdf_obj *ind_obj = NULL;
fz_var(annot);
fz_var(ind_obj);
fz_try(ctx)
{
int ind_obj_num;
fz_rect rect = {0.0, 0.0, 0.0, 0.0};
const char *type_str = annot_type_str(type);
pdf_obj *annot_arr = pdf_dict_gets(page->me, "Annots");
if (annot_arr == NULL)
{
annot_arr = pdf_new_array(doc, 0);
pdf_dict_puts_drop(page->me, "Annots", annot_arr);
}
pdf_dict_puts_drop(annot_obj, "Type", pdf_new_name(doc, "Annot"));
pdf_dict_puts_drop(annot_obj, "Subtype", pdf_new_name(doc, type_str));
pdf_dict_puts_drop(annot_obj, "Rect", pdf_new_rect(doc, &rect));
/* Make printable as default */
pdf_dict_puts_drop(annot_obj, "F", pdf_new_int(doc, F_Print));
annot = fz_malloc_struct(ctx, pdf_annot);
annot->page = page;
annot->rect = rect;
annot->pagerect = rect;
annot->ap = NULL;
annot->widget_type = PDF_WIDGET_TYPE_NOT_WIDGET;
annot->annot_type = type;
/*
Both annotation object and annotation structure are now created.
Insert the object in the hierarchy and the structure in the
page's array.
*/
ind_obj_num = pdf_create_object(doc);
pdf_update_object(doc, ind_obj_num, annot_obj);
ind_obj = pdf_new_indirect(doc, ind_obj_num, 0);
pdf_array_push(annot_arr, ind_obj);
annot->obj = pdf_keep_obj(ind_obj);
/*
Linking must be done after any call that might throw because
pdf_free_annot below actually frees a list. Put the new annot
at the end of the list, so that it will be drawn last.
*/
*page->annot_tailp = annot;
page->annot_tailp = &annot->next;
doc->dirty = 1;
}
fz_always(ctx)
{
pdf_drop_obj(annot_obj);
pdf_drop_obj(ind_obj);
}
fz_catch(ctx)
{
pdf_free_annot(ctx, annot);
fz_rethrow(ctx);
}
return annot;
}