Add mouse wheel support to the Java class vtkCanvas
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
Currently the vtkPanel and vtkCanvas implement MouseListener, MouseMotionListener, and KeyListener but not MouseWheelListener. As a result the mouse wheel does not work when using one of these classes or vtkRenderWindowPanel. It would be nice if the MouseWheelListener could be implemented so the mouse wheel works. Please see the proposed patch for a possible implementation.