I am looking for the "correct" way to show a custom Component as a popup when I mouseover a Vertex in JUNG2.
This question is essentially the same as
Jung2: How to implement displaying details of a node on mouse over of a Node?
but that person seems to be content with a simple tooltip popup, whereas I am not.
NOTE: I am currently using an implementation of PluggableGraphMouse with a MouseMotionListener
plugin which does something like this (I have Note
objects as vertices):
@Override
public void mouseMoved(MouseEvent e) {
Note note = graphVisualiser.getPickSupport().getVertex(getGraphLayout(), e.getX(), e.getY());
if (note != null && note != lastMouseOverNote) {
lastMouseOverNote = note;
// my handling code here
}
}
It works when I mouse over a vertex, and I can also expand on the above to turn off the popup when the mouse goes away, but I am concerned that this approach is incredibly inefficient: it is essentially checking to see if I'm mousing over a vertex every time the mouse moves.
I'd rather have a Listener approach - is there a way to register mouseEntered
/ mouseExited
event to the vertices? (from what I can tell, this is all happening through raw painting and there is no Component that I could register with).
因为顶点是作为图元绘制的,并且没有鼠标移动的侦听器,所以只能这样做,因为只能进行选择/取消选择。
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