+/* Layers */
+static gboolean
+pdf_document_layers_has_layers (EvDocumentLayers *document)
+{
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+ PdfDocument *pdf_document = PDF_DOCUMENT (document);
+ PopplerLayersIter *iter;
+
+ iter = poppler_layers_iter_new (pdf_document->document);
+ if (!iter)
+ return FALSE;
+ poppler_layers_iter_free (iter);
+
+ return TRUE;
+#else
+ return FALSE;
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+}
+
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+static void
+build_layers_tree (PdfDocument *pdf_document,
+ GtkTreeModel *model,
+ GtkTreeIter *parent,
+ PopplerLayersIter *iter)
+{
+ do {
+ GtkTreeIter tree_iter;
+ PopplerLayersIter *child;
+ PopplerLayer *layer;
+ EvLayer *ev_layer = NULL;
+ gboolean visible;
+ gchar *markup;
+ gint rb_group = 0;
+
+ layer = poppler_layers_iter_get_layer (iter);
+ if (layer) {
+ markup = g_markup_escape_text (poppler_layer_get_title (layer), -1);
+ visible = poppler_layer_is_visible (layer);
+ rb_group = poppler_layer_get_radio_button_group_id (layer);
+ pdf_document->layers = g_list_append (pdf_document->layers,
+ g_object_ref (layer));
+ ev_layer = ev_layer_new (g_list_length (pdf_document->layers) - 1,
+ poppler_layer_is_parent (layer),
+ rb_group);
+ } else {
+ gchar *title;
+
+ title = poppler_layers_iter_get_title (iter);
+ markup = g_markup_escape_text (title, -1);
+ g_free (title);
+
+ visible = FALSE;
+ layer = NULL;
+ }
+
+ gtk_tree_store_append (GTK_TREE_STORE (model), &tree_iter, parent);
+ gtk_tree_store_set (GTK_TREE_STORE (model), &tree_iter,
+ EV_DOCUMENT_LAYERS_COLUMN_TITLE, markup,
+ EV_DOCUMENT_LAYERS_COLUMN_VISIBLE, visible,
+ EV_DOCUMENT_LAYERS_COLUMN_ENABLED, TRUE, /* FIXME */
+ EV_DOCUMENT_LAYERS_COLUMN_SHOWTOGGLE, (layer != NULL),
+ EV_DOCUMENT_LAYERS_COLUMN_RBGROUP, rb_group,
+ EV_DOCUMENT_LAYERS_COLUMN_LAYER, ev_layer,
+ -1);
+ if (ev_layer)
+ g_object_unref (ev_layer);
+ g_free (markup);
+
+ child = poppler_layers_iter_get_child (iter);
+ if (child)
+ build_layers_tree (pdf_document, model, &tree_iter, child);
+ poppler_layers_iter_free (child);
+ } while (poppler_layers_iter_next (iter));
+}
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+
+static GtkTreeModel *
+pdf_document_layers_get_layers (EvDocumentLayers *document)
+{
+ GtkTreeModel *model = NULL;
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+ PdfDocument *pdf_document = PDF_DOCUMENT (document);
+ PopplerLayersIter *iter;
+
+ iter = poppler_layers_iter_new (pdf_document->document);
+ if (iter) {
+ model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LAYERS_N_COLUMNS,
+ G_TYPE_STRING, /* TITLE */
+ G_TYPE_OBJECT, /* LAYER */
+ G_TYPE_BOOLEAN, /* VISIBLE */
+ G_TYPE_BOOLEAN, /* ENABLED */
+ G_TYPE_BOOLEAN, /* SHOWTOGGLE */
+ G_TYPE_INT); /* RBGROUP */
+ build_layers_tree (pdf_document, model, NULL, iter);
+ poppler_layers_iter_free (iter);
+ }
+
+#endif
+ return model;
+}
+
+static void
+pdf_document_layers_show_layer (EvDocumentLayers *document,
+ EvLayer *layer)
+{
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+ PdfDocument *pdf_document = PDF_DOCUMENT (document);
+ guint layer_id = ev_layer_get_id (layer);
+
+ poppler_layer_show (POPPLER_LAYER (g_list_nth_data (pdf_document->layers, layer_id)));
+#else
+ return;
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+}
+
+static void
+pdf_document_layers_hide_layer (EvDocumentLayers *document,
+ EvLayer *layer)
+{
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+ PdfDocument *pdf_document = PDF_DOCUMENT (document);
+ guint layer_id = ev_layer_get_id (layer);
+
+ poppler_layer_hide (POPPLER_LAYER (g_list_nth_data (pdf_document->layers, layer_id)));
+#else
+ return;
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+}
+
+static gboolean
+pdf_document_layers_layer_is_visible (EvDocumentLayers *document,
+ EvLayer *layer)
+{
+#ifdef HAVE_POPPLER_LAYERS_ITER_NEW
+ PdfDocument *pdf_document = PDF_DOCUMENT (document);
+ guint layer_id = ev_layer_get_id (layer);
+
+ return poppler_layer_is_visible (POPPLER_LAYER (g_list_nth_data (pdf_document->layers, layer_id)));
+#else
+ return FALSE;
+#endif /* HAVE_POPPLER_LAYERS_ITER_NEW */
+}
+
+static void
+pdf_document_document_layers_iface_init (EvDocumentLayersIface *iface)
+{
+ iface->has_layers = pdf_document_layers_has_layers;
+ iface->get_layers = pdf_document_layers_get_layers;
+ iface->show_layer = pdf_document_layers_show_layer;
+ iface->hide_layer = pdf_document_layers_hide_layer;
+ iface->layer_is_visible = pdf_document_layers_layer_is_visible;
+}