Snippet107.java Source code

Introduction

Here is the source code for Snippet107.java

Source

/*
 * Sash example snippet: implement a simple splitter (with a 20 pixel limit)
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Sash;
import org.eclipse.swt.widgets.Shell;

public class Snippet107 {

    public static void main(String[] args) {
        Display display = new Display();
        final Shell shell = new Shell(display);
        Button button1 = new Button(shell, SWT.PUSH);
        button1.setText("Button 1");
        final Sash sash = new Sash(shell, SWT.VERTICAL);
        Button button2 = new Button(shell, SWT.PUSH);
        button2.setText("Button 2");

        final FormLayout form = new FormLayout();
        shell.setLayout(form);

        FormData button1Data = new FormData();
        button1Data.left = new FormAttachment(0, 0);
        button1Data.right = new FormAttachment(sash, 0);
        button1Data.top = new FormAttachment(0, 0);
        button1Data.bottom = new FormAttachment(100, 0);
        button1.setLayoutData(button1Data);

        final int limit = 20, percent = 50;
        final FormData sashData = new FormData();
        sashData.left = new FormAttachment(percent, 0);
        sashData.top = new FormAttachment(0, 0);
        sashData.bottom = new FormAttachment(100, 0);
        sash.setLayoutData(sashData);
        sash.addListener(SWT.Selection, new Listener() {
            public void handleEvent(Event e) {
                Rectangle sashRect = sash.getBounds();
                Rectangle shellRect = shell.getClientArea();
                int right = shellRect.width - sashRect.width - limit;
                e.x = Math.max(Math.min(e.x, right), limit);
                if (e.x != sashRect.x) {
                    sashData.left = new FormAttachment(0, e.x);
                    shell.layout();
                }
            }
        });

        FormData button2Data = new FormData();
        button2Data.left = new FormAttachment(sash, 0);
        button2Data.right = new FormAttachment(100, 0);
        button2Data.top = new FormAttachment(0, 0);
        button2Data.bottom = new FormAttachment(100, 0);
        button2.setLayoutData(button2Data);

        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}