JScrollBar... how to set the position of the scrollbar?

[theChameleon]

hi, i modified the JFreeChart code to scroll the x axis to the end by default (one of the examples has a JScrollBar incorporated).

but i cant set the position of the horizontal JScrollBar itself. scrollBar.setPosition(300,0); does not work.

how do i change the position of the scroll bar?

[Eranga]

Can you show you code? And from where you found setPosition() on JScrollBar?

[theChameleon]

hello, below is the source code.

it is setLocation(), not setPosition(). my mistake. ah, i found out that setLocation() doesnt move the scroll thing, but moves the whole thing instead.

so, how do i make the scrollbar start by scrolling to the right instead of the default left?

import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.DateTickMarkPosition;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYBarRenderer;
import org.jfree.data.time.*;
import org.jfree.data.xy.XYDataset;

import javax.swing.*;
import java.awt.*;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;

public class BarChartScrollBar1Demo extends JFrame {

	public BarChartScrollBar1Demo() {
		super("BarChartScrollBarlDemo");
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		DateAxis domainAxis = new DateAxis("Date");
		NumberAxis rangeAxis = new NumberAxis("Volume");
		XYBarRenderer renderer = new XYBarRenderer(0.1);
		XYDataset dataset = getDataset();

		Day d1 = new Day();
		Day d2 = (Day) d1.next();
		domainAxis.setAutoRange(false);
		domainAxis.setRange(new DateRange(d1.getFirstMillisecond(),
				d2.getFirstMillisecond()));

		XYPlot mainPlot = new XYPlot(dataset, domainAxis, rangeAxis, renderer);

		mainPlot.setDomainGridlinesVisible(true);
		domainAxis.setTickMarkPosition(DateTickMarkPosition.START);
		JFreeChart chart = new JFreeChart(null, null, mainPlot, true);
		ChartPanel chartPanel = new ChartPanel(chart);
		chartPanel.setPreferredSize(new Dimension(600, 600));

		this.add(chartPanel);
		JScrollBar scrollBar = getScrollBar(domainAxis);

		this.add(scrollBar, BorderLayout.SOUTH);
		this.pack();

		final double r1 = domainAxis.getLowerBound();
		final double r2 = domainAxis.getUpperBound();
		final double millisInHour = 60 * 60 * 1000;

		final double lowerBound = (300 * millisInHour) + r1;
		final double upperBound = (300 * millisInHour) + r2;

		[U]domainAxis.setRange(lowerBound, upperBound); // set default position, need to start the scroll bar at the right instead of the left[/U]
	}

	private XYDataset getDataset() {
		Hour h = new Hour();
		TimeSeries s1 = new TimeSeries("Series 1", Hour.class);
		for (int i = 0; i < 300; i++) {
			h = (Hour) h.next();
			s1.add(h, Math.random() * 200);
		}
		final TimeSeriesCollection dataset = new TimeSeriesCollection();
		dataset.addSeries(s1);

		return dataset;
	}

	private JScrollBar getScrollBar(final DateAxis domainAxis) {
		final double r1 = domainAxis.getLowerBound();
		final double r2 = domainAxis.getUpperBound();
		JScrollBar scrollBar = new JScrollBar(JScrollBar.HORIZONTAL, 0, 100, 0, 400);

		scrollBar.addAdjustmentListener(new AdjustmentListener() {

			public void adjustmentValueChanged(AdjustmentEvent e) {
				double x = e.getValue() * 60 * 60 * 1000;
				domainAxis.setRange(r1 + x, r2 + x);
			}
		});
		return scrollBar;
	}

	public static void main(String[] args) {
		new BarChartScrollBar1Demo().setVisible(true);
	}
}