The Zoom Control panel bean is represented by the IlvJAdvancedZoomControl class. This bean
enables users to zoom in and zoom out on a map at a rate determined
by the displacement of the pointer.
An example of the Zoom Control panel is shown in Zoom Control panel .
Zoom Control panel
Including the bean in an application
To include the Zoom Control panel in your
application, write the following lines of code:
IlvJAdvancedZoomControl zoomer = new IlvJAdvancedZoomControl(); zoomer.setView(view);
Adding the bean to a Swing container
You can then add this bean to a Swing
container:
panel.add(zoomer, BorderLayout.WEST);
Customizing the appearance and behavior
This bean can be presented in horizontal
or vertical layout, using:
zoomer.setOrientation(SwingConstants.VERTICAL);
By default, this bean zooms in or out of
the view at a maximum rate of 6% every 40ms. You can change these
default values to better suit your needs using, for example:
zoomer.setMaxZoomingRatio(1.1); zoomer.setZoomDelay(100);