Add optional content (layers) interface.

2008-11-15  Carlos Garcia Campos  <carlosgc@gnome.org>

	* libdocument/Makefile.am:
	* libdocument/ev-document-layers.[ch]:
	* libdocument/ev-layer.[ch]:

	Add optional content (layers) interface.

svn path=/trunk/; revision=3264

1 files changed, 86 insertions, 0 deletions

diff --git a/libdocument/ev-document-layers.c b/libdocument/ev-document-layers.c
new file mode 100644
index 0000000..f203565
--- /dev/null
+++ b/libdocument/ev-document-layers.c
@@ -0,0 +1,86 @@
+/* ev-document-layers.c
+ *  this file is part of evince, a gnome document_links viewer
+ * 
+ * Copyright (C) 2008 Carlos Garcia Campos  <carlosgc@gnome.org>
+ *
+ * Evince is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Evince is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+
+#include "ev-document-layers.h"
+
+GType
+ev_document_layers_get_type (void)
+{
+	static GType type = 0;
+
+	if (G_UNLIKELY (type == 0)) {
+		const GTypeInfo our_info = {
+			sizeof (EvDocumentLayersIface),
+			NULL,
+			NULL,
+		};
+
+		type = g_type_register_static (G_TYPE_INTERFACE,
+					       "EvDocumentLayers",
+					       &our_info, (GTypeFlags)0);
+	}
+
+	return type;
+}
+
+gboolean
+ev_document_layers_has_layers (EvDocumentLayers *document_layers)
+{
+	EvDocumentLayersIface *iface = EV_DOCUMENT_LAYERS_GET_IFACE (document_layers);
+
+	return iface->has_layers (document_layers);
+}
+
+GtkTreeModel *
+ev_document_layers_get_layers (EvDocumentLayers *document_layers)
+{
+	EvDocumentLayersIface *iface = EV_DOCUMENT_LAYERS_GET_IFACE (document_layers);
+
+	return iface->get_layers (document_layers);
+}
+
+void
+ev_document_layers_show_layer (EvDocumentLayers *document_layers,
+			       EvLayer          *layer)
+{
+	EvDocumentLayersIface *iface = EV_DOCUMENT_LAYERS_GET_IFACE (document_layers);
+
+	iface->show_layer (document_layers, layer);
+}
+
+void
+ev_document_layers_hide_layer (EvDocumentLayers *document_layers,
+			       EvLayer          *layer)
+{
+	EvDocumentLayersIface *iface = EV_DOCUMENT_LAYERS_GET_IFACE (document_layers);
+
+	iface->hide_layer (document_layers, layer);
+}
+
+gboolean
+ev_document_layers_layer_is_visible (EvDocumentLayers *document_layers,
+				     EvLayer          *layer)
+{
+	EvDocumentLayersIface *iface = EV_DOCUMENT_LAYERS_GET_IFACE (document_layers);
+
+	return iface->layer_is_visible (document_layers, layer);
+}