pub type MouseEventCallback<Message> = Box<dyn Fn(Event, Point) -> Option<Message>>;
Expand description

Signature for the callback that ChartWidget can trigger when a mouse event happens inside its layout. Return None if the mouse event is not being handled by this callback.

Arguments

  • The type of mouse event
  • The cursor position during the event, relative to the widget origin. Use the chart coord spec to transform this point into the chart’s data coordinates.