The Scale Control Bar bean is represented by the IlvJMapScaleControl class. This bean enables
users to see the scale of the map. The 
button also enables users to control the
scale interactively by entering a new setting.
button also enables users to control the
scale interactively by entering a new setting.
An example of the Scale Control Bar is shown in Scale Control Bar.
Scale Control Bar
Including the bean in an application
To include the Scale Control Bar bean in
your application, write the following lines of code:
IlvJMapScaleControl scaleControl = new IlvJMapScaleControl(); scaleControl.setView(view);
Adding the bean to a Swing container
You can then add this bean in your Swing
hierarchy.
panel.add(scaleControl, BorderLayout.SOUTH);
The Scale Control Bar bean then attaches
itself and listens for scale changes for the view in order to
update the displayed scale.
Customizing the appearance and behavior
You can prevent users from entering changes to the map scale by
means of this bean (this makes the Control
Scale button disappear) using:
scaleControl.setAllowScaleEdition(false);
If the way the scale is presented is not
appropriate for your needs, many tools are provided to change the
prefix (“1/”), suffix, or even the number formatter:
scaleControl.setPrefix(null);
scaleControl.setSuffix("th");
scaleControl.setScaleFormat(new DecimalFormat());