I have a JScrollPane. And I would like to know how much has been scrolled.
So if user is scrolling down, then I want to know in pixels or any other unit of measurement how far away the top is from what I am looking at.
The reason for that is I would like to do some drawing based on the amount scrolled, and in order for drawing to work I need to know the said amount to the top.
I am sorry, I have actually managed to answer my own question.
I created external variable called scrolledAmount, and then I have added listener to the scrollPane
scrollPane_.getVerticalScrollBar().addAdjustmentListener(new AdjustmentListener()
{
@Override
public void adjustmentValueChanged(AdjustmentEvent e)
{
scrolledAmount_ = e.getValue();
System.out.println("Type is "+e.getAdjustmentType());
System.out.println("Amount scrolled is "+e.getValue());
System.out.println("Scrolled amount is "+scrolledAmount_);
}
});
By doing this I know the exact amount of pixels that has been scrolled.