Widget to show calendar events and TODO items merged in a single agenda?

The Calendar application works with Google Calendar and its agenda style is really useful. Nevertheless, for some reason, it does not work with Google Tasks, so I use GTasks that works with the Google Tasks. I use both of them really intensively, but none of them can show both calendar events and todo items. Sometimes it's very inconvenient because I have to switch between widgets and merge the overall timeline in my mind. So is there any widget to show calendar events and TODO items at once? Agenda style would be a real plus. Thanks in advance.