Java Code Examples for org.eclipse.swt.widgets.Shell#setAlpha()

/**
 * Show the dark panel
 */
public void show() {
	if (parent.isDisposed()) {
		SWT.error(SWT.ERROR_WIDGET_DISPOSED);
	}

	panel = new Shell(parent, SWT.APPLICATION_MODAL | SWT.NO_TRIM);
	panel.setLayout(new FillLayout());
	panel.setAlpha(alpha);

	panel.addListener(SWT.KeyUp, event -> {
		event.doit = false;
	});

	canvas = new Canvas(panel, SWT.NO_BACKGROUND | SWT.DOUBLE_BUFFERED);
	canvas.addPaintListener(event -> {
		paintCanvas(event);
	});

	panel.setBounds(panel.getDisplay().map(parent, null, parent.getClientArea()));
	panel.open();
}
 

/**
 * @param shell shell that will appear
 */
protected static void makeShellAppears(final Shell shell) {
	if (shell == null || shell.isDisposed()) {
		return;
	}

	final Rectangle clientArea = Display.getDefault().getPrimaryMonitor().getClientArea();
	final int startX = clientArea.x + clientArea.width - shell.getSize().x;

	final int stepForPosition = MAX_DURATION_FOR_OPENING / shell.getSize().y * STEP;
	final int stepForAlpha = STEP * 255 / shell.getSize().y;

	final int lastPosition = clientArea.y + clientArea.height - shell.getSize().y;

	shell.setAlpha(0);
	shell.setLocation(startX, clientArea.y + clientArea.height);
	shell.open();

	shell.getDisplay().timerExec(stepForPosition, new Runnable() {

		@Override
		public void run() {

			if (shell == null || shell.isDisposed()) {
				return;
			}

			shell.setLocation(startX, shell.getLocation().y - STEP);
			shell.setAlpha(shell.getAlpha() + stepForAlpha);
			if (shell.getLocation().y >= lastPosition) {
				shell.getDisplay().timerExec(stepForPosition, this);
			} else {
				shell.setAlpha(255);
				Display.getDefault().timerExec(DISPLAY_TIME, fadeOut(shell, false));
			}
		}
	});

}
 

/**
 * @param shell shell that will disappear
 * @param fast if true, the fading is much faster
 * @return a runnable
 */
private static Runnable fadeOut(final Shell shell, final boolean fast) {
	return new Runnable() {

		@Override
		public void run() {
			if (shell == null || shell.isDisposed()) {
				return;
			}

			int currentAlpha = shell.getAlpha();
			currentAlpha -= FADE_OUT_STEP * (fast ? 8 : 1);

			if (currentAlpha <= 0) {
				shell.setAlpha(0);
				shell.dispose();
				return;
			}

			shell.setAlpha(currentAlpha);

			Display.getDefault().timerExec(FADE_TIMER, this);

		}

	};
}
 

private void openFilesMiniView(DownloadManager dm, TableCell cell) {
	UISWTViewBuilderCore builder = ViewManagerSWT.getInstance().getBuilder(
			Download.class, FilesView.MSGID_PREFIX);
	if (builder == null) {
		return;
	}
	SkinnedDialog skinnedDialog = BaseMdiEntry.buildSkinnedDialog("FilesView",
			dm, builder);
	if (skinnedDialog == null) {
		return;
	}

	skinnedDialog.setTitle(dm.getDisplayName());

	Shell shell = skinnedDialog.getShell();

	Rectangle bounds = ((TableCellSWT) cell).getBoundsOnDisplay();
	bounds.y += bounds.height;
	bounds.width = 630;
	bounds.height = (16 * dm.getNumFileInfos()) + 60;
	Rectangle realBounds = shell.computeTrim(0, 0, bounds.width, bounds.height);
	realBounds.width -= realBounds.x;
	realBounds.height -= realBounds.y;
	realBounds.x = bounds.x;
	realBounds.y = bounds.y;
	if (bounds.height > 500) {
		bounds.height = 500;
	}
	shell.setBounds(realBounds);
	shell.setAlpha(230);

	Utils.verifyShellRect(shell, true);

	skinnedDialog.openUnadjusted();
}
 

public DisplayOverlay(final LayeredDisplayView view, final Composite c,
		final IOverlayProvider<OverlayInfo> provider) {
	this.createExtraInfo = provider != null;
	this.view = view;
	final IPartService ps = ((IWorkbenchPart) view).getSite().getService(IPartService.class);
	ps.addPartListener(pl2);
	referenceComposite = c;
	// parentShell = c.getShell();
	popup = new Shell(c.getShell(), SWT.NO_TRIM | SWT.NO_FOCUS);
	popup.setAlpha(140);
	final FillLayout layout = new FillLayout();
	layout.type = SWT.VERTICAL;
	layout.spacing = 10;
	popup.setLayout(layout);
	popup.setBackground(IGamaColors.BLACK.color());
	createPopupControl();
	popup.setAlpha(140);
	popup.layout();
	c.getShell().addShellListener(listener);
	// parentShell.addControlListener(listener);
	c.addControlListener(listener);
	if (provider != null) {
		provider.setTarget(new ThreadedOverlayUpdater(this), view.getDisplaySurface());
	}
	// if (GamaPreferences.Displays.CORE_SHOW_FPS.getValue()) {
	timer.schedule(new FPSTask(), 0, 1000);
	// }
}
 

private static void createShell() {
	DEBUG.OUT("Shell created");
	shell = new Shell(WorkbenchHelper.getShell(), SWT.APPLICATION_MODAL);
	shell.setSize(5, 5);
	shell.setAlpha(0);
	shell.setBackground(IGamaColors.BLACK.color());
}