--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/draw2d/geometry/Transposer.d	Sun Aug 03 00:52:14 2008 +0200
@@ -0,0 +1,121 @@
+/*******************************************************************************
+ * 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.geometry.Transposer;
+
+import dwt.dwthelper.utils;
+
+import dwtx.draw2d.geometry.Dimension;
+import dwtx.draw2d.geometry.Insets;
+import dwtx.draw2d.geometry.Point;
+import dwtx.draw2d.geometry.Rectangle;
+
+/**
+ * Conditionally transposes geometrical objects based on an "enabled" flag. When
+ * enabled, the method t(Object) will transpose the passed geometrical object.
+ * Otherwise, the object will be returned without modification
+ */
+public class Transposer {
+
+private bool enabled = false;
+
+/**
+ * Disables transposing of inputs.
+ *
+ * @since 2.0
+ */
+public void disable() {
+    enabled = false;
+}
+
+/**
+ * Enables transposing of inputs.
+ *
+ * @since 2.0
+ */
+public void enable() {
+    enabled = true;
+}
+
+/**
+ * Returns <code>true</code> if this Transposer is enabled.
+ *
+ * @return <code>true</code> if this Transposer is enabled
+ * @since 2.0
+ */
+public bool isEnabled() {
+    return enabled;
+}
+
+/**
+ * Sets the enabled state of this Transposer.
+ *
+ * @param e  New enabled value
+ * @since 2.0
+ */
+public void setEnabled(bool e) {
+    enabled = e;
+}
+
+/**
+ * Returns a new transposed Dimension of the input Dimension.
+ *
+ * @param d  Input dimension being transposed.
+ * @return  The new transposed dimension.
+ * @since 2.0
+ */
+public Dimension t(Dimension d) {
+    if (isEnabled())
+        return d.getTransposed();
+    return d;
+}
+
+/**
+ * Returns a new transposed Insets of the input Insets.
+ *
+ * @param i  Insets to be transposed.
+ * @return  The new transposed Insets.
+ * @since 2.0
+ */
+public Insets t(Insets i) {
+    if (isEnabled())
+        return i.getTransposed();
+    return i;
+}
+
+/**
+ * Returns a new transposed Point of the input Point.
+ *
+ * @param p  Point to be transposed.
+ * @return  The new transposed Point.
+ * @since 2.0
+ */
+public Point t(Point p) {
+    if (isEnabled())
+        return p.getTransposed();
+    return p;
+}
+
+/**
+ * Returns a new transposed Rectangle of the input Rectangle.
+ *
+ * @param r  Rectangle to be transposed.
+ * @return  The new trasnposed Rectangle.
+ * @since 2.0
+ */
+public Rectangle t(Rectangle r) {
+    if (isEnabled())
+        return r.getTransposed();
+    return r;
+}
+
+}