--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/draw2d/StackLayout.d	Sun Aug 03 00:52:14 2008 +0200
@@ -0,0 +1,98 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.draw2d.StackLayout;
+
+import dwt.dwthelper.utils;
+import dwtx.dwtxhelper.Collection;
+
+import dwtx.draw2d.geometry.Dimension;
+import dwtx.draw2d.geometry.Rectangle;
+import dwtx.draw2d.AbstractHintLayout;
+import dwtx.draw2d.IFigure;
+
+/**
+ * Figures using the StackLayout as their layout manager have their children placed on top
+ * of one another. Order of placement is determined by the order in which the children
+ * were added, first child added placed on the bottom.
+ */
+public class StackLayout
+    : AbstractHintLayout
+{
+
+/**
+ * Returns the minimum size required by the input container. This is the size of the
+ * largest child of the container, as all other children fit into this size.
+ *
+ * @see AbstractHintLayout#calculateMinimumSize(IFigure, int, int)
+ */
+protected Dimension calculateMinimumSize(IFigure figure, int wHint, int hHint) {
+    if (wHint > -1)
+        wHint = Math.max(0, wHint - figure.getInsets().getWidth());
+    if (hHint > -1)
+        hHint = Math.max(0, hHint - figure.getInsets().getHeight());
+    Dimension d = new Dimension();
+    List children = figure.getChildren();
+    IFigure child;
+    for (int i = 0; i < children.size(); i++) {
+        child = cast(IFigure)children.get(i);
+        if (!isObservingVisibility() || child.isVisible())
+            d.union_(child.getMinimumSize(wHint, hHint));
+    }
+
+    d.expand(figure.getInsets().getWidth(),
+             figure.getInsets().getHeight());
+    d.union_(getBorderPreferredSize(figure));
+    return d;
+
+}
+
+/**
+ * Calculates and returns the preferred size of the given figure.  This is the union of
+ * the preferred sizes of the widest and the tallest of all its children.
+ *
+ * @see AbstractLayout#calculatePreferredSize(IFigure, int, int)
+ */
+protected Dimension calculatePreferredSize(IFigure figure, int wHint, int hHint) {
+    if (wHint > -1)
+        wHint = Math.max(0, wHint - figure.getInsets().getWidth());
+    if (hHint > -1)
+        hHint = Math.max(0, hHint - figure.getInsets().getHeight());
+    Dimension d = new Dimension();
+    List children = figure.getChildren();
+    IFigure child;
+    for (int i = 0; i < children.size(); i++) {
+        child = cast(IFigure)children.get(i);
+        if (!isObservingVisibility() || child.isVisible())
+            d.union_(child.getPreferredSize(wHint, hHint));
+    }
+
+    d.expand(figure.getInsets().getWidth(),
+             figure.getInsets().getHeight());
+    d.union_(getBorderPreferredSize(figure));
+    return d;
+}
+
+/**
+ * @see dwtx.draw2d.LayoutManager#layout(IFigure)
+ */
+public void layout(IFigure figure) {
+    Rectangle r = figure.getClientArea();
+    List children = figure.getChildren();
+    IFigure child;
+    for (int i = 0; i < children.size(); i++) {
+        child = cast(IFigure)children.get(i);
+        child.setBounds(r);
+    }
+}
+
+}