Code similar to the eclipse welcome window-formlayout typical example

A code similar to the eclipse welcome window

A background image with a progress bar at the bottom and a label on it to display some information.

Technical points:

I. Center the window

Ii. form layout

3. swt ui Thread Scheduling (this example implements a false one). Note that only the UI thread can operate the UI control.

In other Windows systems, new welcomewindow (). open () is enabled. After the loading task is executed in Windows, it is automatically disabled.

/** * Welcome Window */public class WelcomeWindow {//private static Logger logger = LoggerFactory.getLogger(WelcomeWindow.class);private Shell shell;/** * Open the window. */public void open() {Display display = Display.getDefault();createContents();configureShell();shell.open();// shell.layout();while (!shell.isDisposed()) {if (!display.readAndDispatch()) {display.sleep();}}}/** * Configure shell *  * @param shell */protected void configureShell() {shell.pack();Rectangle rctDisplay = shell.getDisplay().getBounds();Rectangle rctShell = shell.getBounds();int x = (rctDisplay.width - rctShell.width) / 2;int y = (rctDisplay.height - rctShell.height) / 2;shell.setLocation(x, y);}/** * Create contents of the window. */protected void createContents() {shell = new Shell(SWT.ON_TOP);shell.setLayout(new FillLayout());// Composite as containerComposite container = new Composite(shell, SWT.NONE);FormLayout layout = new FormLayout();container.setLayout(layout);// ProgressBarfinal ProgressBar bar = new ProgressBar(container, SWT.HORIZONTAL);bar.setMinimum(0);bar.setMaximum(100);final int min = bar.getMinimum();final int max = bar.getMaximum();FormData formData = null;formData = new FormData();formData.left = new FormAttachment(0, 0);formData.right = new FormAttachment(100, 0);formData.bottom = new FormAttachment(100, 0);bar.setLayoutData(formData);// Label Messagefinal Label lblMessage = new Label(container, SWT.INHERIT_DEFAULT);lblMessage.setBackground(shell.getDisplay().getSystemColor(SWT.COLOR_WHITE));formData = new FormData();formData.left = new FormAttachment(0, 0);formData.right = new FormAttachment(60);formData.bottom = new FormAttachment(bar, 0);lblMessage.setLayoutData(formData);// Label ImageLabel lblImage = new Label(container, SWT.NONE);lblImage.setImage(Registry.getImage("logo.bmp"));formData = new FormData();formData.left = new FormAttachment(0, 0);formData.top = new FormAttachment(0, 0);lblImage.setLayoutData(formData);final int step = 5;new Thread(new Runnable() {public void run() {shell.getDisplay().asyncExec(new Runnable() {public void run() {for (int i = min; i < max; i += step) {if (bar.isDisposed()) {return;}try {Thread.sleep(100);} catch (InterruptedException e) {e.printStackTrace();}String text = GlobalVariable.getResourceBundle().getString("ww.bar.loading");text = MessageFormat.format(text, bar.getSelection(), StringUtils.repeat('.', i / step));lblMessage.setText(text);bar.setSelection(bar.getSelection() + i);}shell.dispose();}});}}).start();}}