package org.swtchart.examples.advanced;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.swtchart.Chart;
import org.swtchart.IAxis;
import org.swtchart.ILineSeries;
import org.swtchart.ISeries.SeriesType;
/**
* An example to convert pixel coordinate into data coordinate.
*/
public class PxielToDataConversionExample {
private static final double[] ySeries = { 0.0, 0.38, 0.71, 0.92, 1.0, 0.92,
0.71, 0.38, 0.0, -0.38, -0.71, -0.92, -1.0, -0.92, -0.71, -0.38 };
/**
* The main method.
*
* @param args
* the arguments
*/
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setText("Pxiel To Data Conversion");
shell.setSize(500, 400);
shell.setLayout(new FillLayout());
createChart(shell);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
/**
* create the chart.
*
* @param parent
* The parent composite
* @return The created chart
*/
static public Chart createChart(Composite parent) {
// create a chart
final Chart chart = new Chart(parent, SWT.NONE);
chart.getTitle().setText("Pxiel To Data Conversion");
// get axes
final IAxis xAxis = chart.getAxisSet().getXAxis(0);
final IAxis yAxis = chart.getAxisSet().getYAxis(0);
// create line series
ILineSeries series = (ILineSeries) chart.getSeriesSet().createSeries(
SeriesType.LINE, "line series");
series.setYSeries(ySeries);
// adjust the axis range
chart.getAxisSet().adjustRange();
// add mouse move listener to show mouse position on tooltip
chart.getPlotArea().addMouseMoveListener(new MouseMoveListener() {
public void mouseMove(MouseEvent e) {
double x = xAxis.getDataCoordinate(e.x);
double y = yAxis.getDataCoordinate(e.y);
chart.getPlotArea().setToolTipText("x:" + x + ", y:" + y);
}
});
return chart;
}
}