An interface that can be used to control the information of the tooltip area to contain custom text or formatting. General usage is as follows:
chart.setToolTip( new ToolTip() .setToolTipFormatter(new ToolTipFormatter() { public String format(ToolTipData toolTipData) { return toolTipData.getXAsLong() + " degrees"; } }) );
See the documentation on the {@link #format(ToolTipData)} function for more details on thecapabilities available within custom formatters.
@author squinn@moxiegroup.com (Shawn Quinn)
@since 1.0.0