I am working on some graph visualizations, and I am using the JavaScript library graph Dracula. Now, with this library, when I want to move a node I have to click the node I want to move and move it on the desired place (with drag and drop). But, what I want to do is to select more nodes and move all of them. I can't figure out how to do this, since I am not so experienced in JavaScript programming. So, my question is:
- How can I select multiple nodes with rectangle selection and move them?
- How can I select multiple nodes with, say, Ctrl + left click and select more nodes and then move them?
By the looks of things, almost all of Dracula's graph rendering is really managed by RaphaelJS.
In which case, things may be quite a bit easier for you. It seems other people have asked how to move elements in RaphaelJS.
来源：https://stackoverflow.com/questions/14421128/how-can-i-make-rectangle-selection-on-multiple-nodes-with-graph-dracula