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/*******************************************************************************
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* Copyright (c) 2000, 2010 IBM Corporation and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* IBM Corporation - initial API and implementation
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*******************************************************************************/
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package org.eclipse.draw2d.geometry;
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/**
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* Conditionally transposes geometrical objects based on an "enabled" flag. When
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* enabled, the method t(Object) will transpose the passed geometrical object.
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* Otherwise, the object will be returned without modification
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*/
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public class Transposer {
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private boolean enabled = false;
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/**
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* Disables transposing of inputs.
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*
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* @since 2.0
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*/
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public void disable() {
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enabled = false;
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}
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/**
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* Enables transposing of inputs.
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*
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* @since 2.0
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*/
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public void enable() {
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enabled = true;
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}
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/**
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* Returns <code>true</code> if this Transposer is enabled.
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*
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* @return <code>true</code> if this Transposer is enabled
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* @since 2.0
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*/
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public boolean isEnabled() {
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return enabled;
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}
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/**
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* Sets the enabled state of this Transposer.
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*
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* @param e
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* New enabled value
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* @since 2.0
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*/
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public void setEnabled(boolean e) {
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enabled = e;
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}
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/**
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* Returns a new transposed Dimension of the input Dimension.
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*
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* @param d
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* Input dimension being transposed.
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* @return The new transposed dimension.
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* @since 2.0
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*/
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public Dimension t(Dimension d) {
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if (isEnabled())
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return d.getTransposed();
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return d;
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}
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/**
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* Returns a new transposed Insets of the input Insets.
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*
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* @param i
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* Insets to be transposed.
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* @return The new transposed Insets.
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* @since 2.0
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*/
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public Insets t(Insets i) {
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if (isEnabled())
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return i.getTransposed();
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return i;
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}
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/**
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* Returns a new transposed Point of the input Point.
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*
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* @param p
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* Point to be transposed.
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* @return The new transposed Point.
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* @since 2.0
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*/
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public Point t(Point p) {
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if (isEnabled())
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return p.getTransposed();
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return p;
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}
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/**
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* Returns a new transposed Rectangle of the input Rectangle.
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*
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* @param r
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* Rectangle to be transposed.
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* @return The new trasnposed Rectangle.
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* @since 2.0
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*/
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public Rectangle t(Rectangle r) {
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if (isEnabled())
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return r.getTransposed();
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return r;
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}
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}
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