1 files changed, 80 insertions, 0 deletions
diff --git a/src/gplot/gplotfunction.c b/src/gplot/gplotfunction.c
new file mode 100644
index 0000000..576aa85
--- /dev/null
+++ b/src/gplot/gplotfunction.c
@@ -0,0 +1,80 @@
+/*
+ * gplotfunction.c
+ *
+ * Authors:
+ *  Ricardo Markiewicz <rmarkie@fi.uba.ar>
+ *
+ * Copyright (C) 1999-2001  Richard Hult
+ * Copyright (C) 2003,2004  Ricardo Markiewicz
+ *
+ * This library 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.
+ *
+ * This program 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 library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "gplotfunction.h"
+
+	
+static void
+g_plot_function_base_init (gpointer g_class)
+{
+	static gboolean initialized = FALSE;
+	if (!initialized) {
+		/* create interface signals here. */
+		initialized = TRUE;
+
+		g_object_interface_install_property (g_class,
+			g_param_spec_boolean ("visible",
+				"gplot_function_visible",
+				"Get/Set if function is visible",
+				TRUE,
+				G_PARAM_READWRITE));
+	}
+}
+
+GType
+g_plot_function_get_type (void)
+{
+	static GType type = 0;
+		if (type == 0) {
+			static const GTypeInfo info = {
+				sizeof (GPlotFunctionClass),
+				g_plot_function_base_init,   /* base_init */
+				NULL,   /* base_finalize */
+				NULL,   /* class_init */
+				NULL,   /* class_finalize */
+				NULL,   /* class_data */
+				0,
+				0,      /* n_preallocs */
+				NULL    /* instance_init */
+			};
+			type = g_type_register_static (G_TYPE_INTERFACE, "GPlotFunction", &info, 0);
+		}
+		return type;
+}
+
+void
+g_plot_function_draw (GPlotFunction *self, cairo_t * cr, GPlotFunctionBBox *bbox)
+{
+  if (GPLOT_FUNCTION_GET_CLASS (self)->draw)
+  	GPLOT_FUNCTION_GET_CLASS (self)->draw (self, cr, bbox);
+}
+
+void
+g_plot_function_get_bbox (GPlotFunction *self, GPlotFunctionBBox *bbox) 
+{
+  if (GPLOT_FUNCTION_GET_CLASS (self)->get_bbox)
+  	GPLOT_FUNCTION_GET_CLASS (self)->get_bbox (self, bbox);
+}
+