The Overview is an orientation and navigation tool. It
enhances the navigability by providing a map-like picture of the entire
diagram and provides a marker to indicate the current position of
the viewport inside the diagram.
The Overview is a visual representation of the viewport
in relation to the entire content, and it allows you to navigate the
diagram. When you click a point on the Overview, the viewport is moved
and centered on that point. The marker indicating the position of
the viewport is drawn as a rectangle representing the visible viewport
area.
The Overview can be used as a navigation tool and provides
the following basic functions:
- Panning: click the Overview to pan the viewport.
- Centering: click the viewport to center it on the point you indicate.
- Fit: click the viewport while holding the Shift key to fit it into the whole content of the diagram.
- Zooming: scroll up or scroll down to change the zoom level of the viewport.
You can use the Overview as an embedded Overview or as
an Overview widget.