Snippet190.java Source code

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Here is the source code for Snippet190.java

Source

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Spinner;

/*
 * Floating point values in Spinner
 * 
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */

public class Snippet190 {

    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Spinner with float values");
        shell.setLayout(new GridLayout());
        final Spinner spinner = new Spinner(shell, SWT.NONE);
        // allow 3 decimal places
        spinner.setDigits(3);
        // set the minimum value to 0.001
        spinner.setMinimum(1);
        // set the maximum value to 20
        spinner.setMaximum(20000);
        // set the increment value to 0.010
        spinner.setIncrement(10);
        // set the seletion to 3.456
        spinner.setSelection(3456);
        spinner.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                int selection = spinner.getSelection();
                int digits = spinner.getDigits();
                System.out.println("Selection is " + (selection / Math.pow(10, digits)));
            }
        });
        shell.setSize(200, 200);
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}