+void drawing_request_expose(EventsRequest *events_request,
+ LttvTracesetState *tss,
+ LttTime end_time);
+
+void drawing_data_request_begin(EventsRequest *events_request,
+ LttvTracesetState *tss);
+void drawing_chunk_begin(EventsRequest *events_request, LttvTracesetState *tss);
+
+