+ void screenUpdate(Update::flags f) { update_ = f; }
+ /// Does the buffer need updating?
+ bool needBufferUpdate() const { return need_buf_update_; }
+ /// Force the buffer to be updated
+ void forceBufferUpdate() { need_buf_update_ = true; }
+ /// Clear the flag indicating we need an update
+ void clearBufferUpdate() { need_buf_update_ = false; }