If you do not want or cannot use (because of your color scheme, for
example) a predefined effect, you can also build your own instance
of IlvHoverHighlightingImageOperation.
This class allows you to define which Java 2D™ image operation you want to use to
highlight your objects. It also contains methods to provide a
filter, to indicate which objects will be highlighted, and an
opacity (or alpha) if you want to see the regular object
representation through the highlighting effect.
For example, here is an operation that will
have a more blurred effect, be half transparent and only for
nongraphic bag objects.
float[] blur5Kernel = new float[5 * 5];
for (int i = 0; i < blur5Kernel.length; i++) {
blur5Kernel[i] = 1f / blur5Kernel.length;
}
IlvHoverHighlightingImageOperation myOperation=new
IlvHoverHighlightingImageOperation(
new ConvolveOp(new Kernel(5, 5, blur5Kernel)), 1));
myOperation.setAlpha(0.5f);
myOperation.setHighlightFilter(new
IlvHoverHighlightingImageOperation.NonGraphicBagFilter());
You can set your operation instance on the manager by means of setHoverHighlightingImageOperation. The mode
will then be known to the manager as "Custom".